n\k 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 2 .50000 3 .33333 4 .37500 .58333 5 .36667 .45000 6 .36806 .42222 .63750 7 .36786 .44841 .50952 8 .36788 .44911 .49963 .66230 9 .36788 .44576 .48522 .55181 10 .36788 .44601 .50533 .53230 .68679 11 .36788 .44633 .50476 .52233 .58029 12 .36788 .44628 .50495 .51473 .56550 .70123 13 .36788 .44625 .50300 .53009 .55395 .60280 14 .36788 .44626 .50327 .53204 .55095 .58355 .71497 15 .36788 .44626 .50333 .53179 .54534 .57687 .62073 16 .36788 .44626 .50346 .53151 .55850 .56946 .60501 .72448 17 .36788 .44626 .50343 .53024 .55925 .56699 .59374 .63570 18 .36788 .44626 .50342 .53021 .55999 .56309 .59101 .61801 .73432 19 .36788 .44626 .50341 .53034 .55944 .57406 .58482 .60903 .64801 20 .36788 .44626 .50342 .53040 .55927 .57575 .58414 .60347 .63266 .74119 21 .36788 .44626 .50342 .53047 .55833 .57584 .58071 .59974 .62154 .65898 22 .36788 .44626 .50342 .53046 .55840 .57609 .59062 .59609 .61809 .64221 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.50342 .53044 .55854 .57495 .59146 .60263 .61553 .62350 .62416 .63408 .64518 .65682 .67275 .70230 34 .36788 .44626 .50342 .53044 .55854 .57494 .59150 .60259 .61555 .62382 .63083 .63251 .64387 .65401 .66798 .68769 .77596 35 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60261 .61525 .62386 .63187 .63255 .64163 .65219 .66310 .67861 .70733 36 .36788 .44626 .50342 .53044 .55854 .57494 .59154 .60263 .61515 .62394 .63264 .63110 .64139 .64991 .66121 .67312 .69366 .77904 37 .36788 .44626 .50342 .53044 .55854 .57494 .59153 .60267 .61475 .62377 .63277 .63714 .63984 .64863 .65844 .66909 .68406 .71206 38 .36788 .44626 .50342 .53044 .55854 .57494 .59153 .60268 .61473 .62374 .63301 .63841 .64012 .64691 .65733 .66617 .67933 .69799 .78235 39 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60271 .61472 .62351 .63294 .63895 .63870 .64663 .65509 .66430 .67450 .68911 .71639 40 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61475 .62339 .63302 .63932 .64442 .64547 .65440 .66238 .67233 .68375 .70309 .78502 41 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60274 .61476 .62306 .63282 .63940 .64546 .64561 .65278 .66088 .66959 .67962 .69373 .72046 42 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60273 .61480 .62302 .63281 .63950 .64619 .64442 .65274 .65928 .66845 .67659 .68907 .70688 .78791 43 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60273 .61481 .62303 .63259 .63946 .64637 .64971 .65157 .65850 .66646 .67461 .68431 .69814 .72422 44 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60273 .61483 .62304 .63250 .63948 .64664 .65085 .65188 .65726 .66550 .67277 .68190 .69289 .71129 .79024 45 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62306 .63220 .63932 .64662 .65141 .65071 .65715 .66396 .67155 .67921 .68878 .70220 .72780 46 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61485 .62307 .63218 .63928 .64673 .65180 .65575 .65622 .66355 .66984 .67797 .68574 .69752 .71461 .79280 47 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61485 .62310 .63217 .63910 .64664 .65192 .65671 .65645 .66230 .66889 .67606 .68356 .69288 .70603 .73110 48 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62311 .63219 .63901 .64665 .65205 .65739 .65544 .66238 .66771 .67526 .68169 .69042 .70093 .71851 .79487 49 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62312 .63219 .63875 .64650 .65205 .65764 .66013 .66146 .66723 .67358 .68044 .68757 .69680 .70965 .73427 50 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63222 .63871 .64647 .65209 .65792 .66119 .66178 .66625 .67300 .67907 .68629 .69380 .70500 .72145 .79714 51 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62314 .63223 .63872 .64629 .65202 .65793 .66175 .66078 .66625 .67182 .67798 .68444 .69150 .70046 .71307 .73722 52 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62314 .63225 .63872 .64622 .65201 .65805 .66211 .66529 .66551 .67156 .67670 .68359 .68961 .69795 .70801 .72492 .79901 53 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61483 .62313 .63225 .63873 .64599 .65187 .65801 .66229 .66619 .66576 .67059 .67605 .68215 .68824 .69512 .70394 .71626 .74005 54 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61483 .62313 .63227 .63874 .64596 .65183 .65805 .66244 .66685 .66489 .67073 .67515 .68143 .68692 .69368 .70100 .71167 .72758 .80105 55 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61483 .62313 .63227 .63876 .64595 .65169 .65796 .66246 .66711 .66911 .66995 .67485 .68016 .68602 .69185 .69861 .70722 .71934 .74270 56 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63228 .63877 .64596 .65161 .65795 .66253 .66738 .67009 .67030 .67405 .67977 .68475 .69094 .69661 .70467 .71439 .73068 .80273 57 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63228 .63879 .64596 .65141 .65782 .66249 .66744 .67063 .66942 .67412 .67884 .68399 .68956 .69526 .70189 .71034 .72224 .74526 58 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63228 .63880 .64598 .65137 .65779 .66250 .66758 .67099 .67350 .67350 .67870 .68298 .68894 .69391 .70033 .70744 .71766 .73309 .80459 59 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64599 .65137 .65764 .66242 .66755 .67118 .67436 .67377 .67790 .68255 .68764 .69297 .69845 .70503 .71329 .72500 .74767 60 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64600 .65137 .65758 .66240 .66761 .67134 .67498 .67300 .67807 .68182 .68715 .69194 .69754 .70305 .71077 .72014 .73591 .80613 61 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63882 .64601 .65138 .65739 .66228 .66755 .67139 .67524 .67685 .67742 .68162 .68615 .69109 .69616 .70156 .70798 .71612 .72763 .74999 62 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64603 .65139 .65737 .66224 .66756 .67146 .67552 .67776 .67776 .68096 .68588 .69008 .69551 .70020 .70638 .71326 .72311 .73810 .80781 63 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64603 .65140 .65735 .66212 .66748 .67145 .67560 .67828 .67698 .68107 .68513 .68953 .69439 .69923 .70445 .71085 .71881 .73016 .75219 64 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64604 .65141 .65736 .66206 .66746 .67148 .67573 .67864 .68072 .68054 .68507 .68873 .69379 .69822 .70348 .70886 .71629 .72538 .74066 .80923 65 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64604 .65142 .65736 .66189 .66735 .67143 .67574 .67883 .68152 .68082 .68439 .68842 .69278 .69749 .70212 .70729 .71354 .72138 .73255 .75431 66 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64605 .65143 .65738 .66186 .66732 .67142 .67582 .67900 .68211 .68013 .68458 .68782 .69243 .69649 .70147 .70592 .71190 .71858 .72809 .74268 .81078 67 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64605 .65144 .65738 .66185 .66720 .67135 .67577 .67907 .68238 .68366 .68403 .68770 .69161 .69586 .70036 .70492 .70998 .71614 .72384 .73487 .75632 68 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64605 .65144 .65739 .66185 .66715 .67132 .67581 .67915 .68266 .68453 .68436 .68714 .69143 .69504 .69985 .70387 .70891 .71418 .72132 .73017 .74503 .81208 69 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64604 .65145 .65740 .66186 .66699 .67123 .67574 .67916 .68275 .68503 .68366 .68727 .69081 .69465 .69882 .70315 .70756 .71257 .71862 .72621 .73707 .75828 70 .36788 .44626 .50342 .53044 .55854 .57494 .59152 .60272 .61484 .62313 .63227 .63881 .64604 .65145 .65741 .66186 .66697 .67119 .67574 .67920 .68290 .68537 .68711 .68682 .69079 .69398 .69839 .70231 .70687 .71114 .71696 .72343 .73266 .74688 .81351