cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A308325 a(n) = Sum_{i=0..n} Sum_{j=0..n} Sum_{k=0..n} Sum_{l=0..n} Sum_{m=0..n} (-1)^(i+j+k+l+m) * (i+j+k+l+m)!/(i!*j!*k!*l!*m!).

Table of values

n a(n)
0 1
1 -44
2 44121
3 -66211704
4 120965241901
5 -247578134832564
6 545591130328772081
7 -1266424080449896533104
8 3054976120222919562674421
9 -7591388058951771019224668844
10 19313872514817534830089536344041
11 -50089152258417936550358713847686344

List of values

[1, -44, 44121, -66211704, 120965241901, -247578134832564, 545591130328772081, -1266424080449896533104, 3054976120222919562674421, -7591388058951771019224668844, 19313872514817534830089536344041, -50089152258417936550358713847686344]