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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.

A375660 Expansion of e.g.f. 1 / (1 - x * (exp(x) - 1))^2.

Table of values

n a(n)
0 1
1 0
2 4
3 6
4 80
5 370
6 4152
7 34034
8 413632
9 4744674
10 66354680
11 954512482
12 15454225536
13 263909265074
14 4898255210968
15 96284064551250
16 2022022344889472
17 44858682139345090
18 1052826609589372152
19 25994393541984673154
20 674563101823606851520
21 18337775305498096349202

List of values

[1, 0, 4, 6, 80, 370, 4152, 34034, 413632, 4744674, 66354680, 954512482, 15454225536, 263909265074, 4898255210968, 96284064551250, 2022022344889472, 44858682139345090, 1052826609589372152, 25994393541984673154, 674563101823606851520, 18337775305498096349202]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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