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.

A318183 a(n) = [x^n] Sum_{k>=0} x^k/Product_{j=1..k} (1 + n*j*x).

Table of values

n a(n)
0 1
1 1
2 -1
3 1
4 25
5 -674
6 15211
7 -331827
8 5987745
9 15901597
10 -13125035449
11 1292056076070
12 -103145930581319
13 7462324963409941
14 -464957409070517453
15 16313974895147212801
16 2059903411953959582849
17 -708700955022151333496910
18 143215213612865558214820303
19 -24681846509158429152517973103

List of values

[1, 1, -1, 1, 25, -674, 15211, -331827, 5987745, 15901597, -13125035449, 1292056076070, -103145930581319, 7462324963409941, -464957409070517453, 16313974895147212801, 2059903411953959582849, -708700955022151333496910, 143215213612865558214820303, -24681846509158429152517973103]