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.

A288269 Expansion of e.g.f.: exp(Sum_{k>=1} (k-1)*k*x^k).

Table of values

n a(n)
0 1
1 0
2 4
3 36
4 336
5 3840
6 52800
7 836640
8 14864640
9 291755520
10 6264276480
11 145962432000
12 3665362821120
13 98604459233280
14 2827182573895680
15 86016204578304000
16 2766450467708928000
17 93741871082943283200
18 3336807307530977280000
19 124443669133537276723200

List of values

[1, 0, 4, 36, 336, 3840, 52800, 836640, 14864640, 291755520, 6264276480, 145962432000, 3665362821120, 98604459233280, 2827182573895680, 86016204578304000, 2766450467708928000, 93741871082943283200, 3336807307530977280000, 124443669133537276723200]