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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.

A383260 Expansion of e.g.f. f(x) * exp(f(x)), where f(x) = (exp(3*x) - 1)/3.

Table of values

n a(n)
0 0
1 1
2 5
3 30
4 211
5 1691
6 15126
7 148975
8 1599401
9 18563832
10 231317677
11 3076301471
12 43448641176
13 648950825173
14 10212710942609
15 168797691270438
16 2921824286030527
17 52833169082034839
18 995732022426733782
19 19519908917429511307
20 397294691005861642805
21 8381466690394292755896

List of values

[0, 1, 5, 30, 211, 1691, 15126, 148975, 1599401, 18563832, 231317677, 3076301471, 43448641176, 648950825173, 10212710942609, 168797691270438, 2921824286030527, 52833169082034839, 995732022426733782, 19519908917429511307, 397294691005861642805, 8381466690394292755896]

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

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