wsmith@uiucdcsb.CS.UIUC.EDU (03/13/86)
Here is a series that might be fun to derive a closed form for: 0: -1 1: -1 2: -1 3: 17 4: 399 5: 7849 6: 162287 7: 3667649 Does it have a name? Bill Smith ihnp4!uiucdcs!wsmith wsmith@b.cs.uiuc.edu
tim@ism780c.UUCP (Tim Smith) (03/15/86)
>Here is a series that might be fun to derive a closed form for: > >0: -1 >1: -1 >2: -1 >3: 17 >4: 399 >5: 7849 >6: 162287 >7: 3667649 > Ok. 1 F(n) = --- P(n) 7! 7 6 5 4 P(n) = 2,683,114 n - 55,499,598 n + 457,111,270 n - 1,902,659,850 n + 3 2 4,175,538,976 n - 4,513,215,672 n + 1,836,041,760 n - 5040 Is this what you had in mind? :-) -- Tim Smith sdcrdcf!ism780c!tim || ima!ism780!tim || ihnp4!cithep!tim