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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.

A367880 Expansion of e.g.f. 1/(1 - 2 * x * (exp(x) - 1)).

Table of values

n a(n)
0 1
1 0
2 4
3 6
4 104
5 490
6 7452
7 65534
8 1062224
9 13825746
10 252414020
11 4303920742
12 89701635960
13 1870259792570
14 44391086228972
15 1085906907998670
16 29112549152845472
17 813723252665063842
18 24402507959486170260
19 765358519469125339190

List of values

[1, 0, 4, 6, 104, 490, 7452, 65534, 1062224, 13825746, 252414020, 4303920742, 89701635960, 1870259792570, 44391086228972, 1085906907998670, 29112549152845472, 813723252665063842, 24402507959486170260, 765358519469125339190]

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

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