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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.

A366564 Expansion of e.g.f. -log(1 - x^2 * (exp(x) - 1)).

Table of values

n a(n)
0 0
1 0
2 0
3 6
4 12
5 20
6 390
7 2562
8 11816
9 166392
10 1970730
11 17131070
12 241009692
13 3861669396
14 51411143966
15 828234487290
16 15865154629200
17 283329069136112
18 5431892804244306
19 119420738547382134
20 2628980439169097540
21 59707303735169923980
22 1488953374718002643142

List of values

[0, 0, 0, 6, 12, 20, 390, 2562, 11816, 166392, 1970730, 17131070, 241009692, 3861669396, 51411143966, 828234487290, 15865154629200, 283329069136112, 5431892804244306, 119420738547382134, 2628980439169097540, 59707303735169923980, 1488953374718002643142]

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

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