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.

A337824 a(0) = 0; a(n) = n^2 - (1/n) * Sum_{k=1..n-1} (binomial(n,k) * (n-k))^2 * k * a(k).

Table of values

n a(n)
0 0
1 1
2 2
3 -15
4 16
5 2505
6 -60264
7 -606515
8 131316928
9 -4813100271
10 -339213768200
11 62401665573621
12 -2075963863814928
13 -745086903175541927
14 140250562903680456332
15 808225064553580739325
16 -5491409141464496462591744
17 1013058261721909845376508449
18 127689148764914765889971316600

List of values

[0, 1, 2, -15, 16, 2505, -60264, -606515, 131316928, -4813100271, -339213768200, 62401665573621, -2075963863814928, -745086903175541927, 140250562903680456332, 808225064553580739325, -5491409141464496462591744, 1013058261721909845376508449, 127689148764914765889971316600]