A combination of all possible values: ;<@(]ness~ (}:@([EMAIL PROTECTED]@|~#])>:@i.))"0 >:i.15x 1 1 1 3 1 1 10 15 1 1 35 105 1 280 1 126 945 1 1 462 5775 15400 10395 1 1 1716 135135 1 126126 1401400
http://research.att.com/~njas/sequences/A060540 R.E. Boss > -----Oorspronkelijk bericht----- > Van: [EMAIL PROTECTED] [mailto:programming- > [EMAIL PROTECTED] Namens Roger Hui > Verzonden: donderdag 24 juli 2008 7:31 > Aan: Programming forum > Onderwerp: Re: [Jprogramming] equal-size partitions > > The number of size-x subsets of y objects > (number of equal sized subsets) is: > > ness=: 4 : 0 " 0 > (!y) % (!x) * (!y%x)^x > ) > > 2x ness 2x*>:i.10 > 1 3 10 35 126 462 1716 6435 24310 92378 > http://www.research.att.com/~njas/sequences/A001700 > > 3x ness 3x*>:i.8 > 1 15 280 5775 126126 2858856 66512160 1577585295 > http://www.research.att.com/~njas/sequences/A060542 > > 4x ness 4x*>:i.8 > 1 105 15400 2627625 488864376 96197645544 19688264481600 4148378852099625 > http://www.research.att.com/~njas/sequences/A082368 > > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
