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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.

A317667 G.f. A(x) satisfies: Sum_{n>=0} ( 1/A(x) - (1-x)^(3*n) )^n = 1.

Table of values

n a(n)
0 1
1 3
2 15
3 154
4 2865
5 77532
6 2684504
7 111490839
8 5357828286
9 291299582266
10 17643988446921
11 1177175235308976
12 85754781272021397
13 6772714984220704506
14 576470959628636447748
15 52613628461306161087953
16 5126338275850981999654524
17 531146069930403178373329794
18 58319563977901655667747310206
19 6764879932357508722274792757285

List of values

[1, 3, 15, 154, 2865, 77532, 2684504, 111490839, 5357828286, 291299582266, 17643988446921, 1177175235308976, 85754781272021397, 6772714984220704506, 576470959628636447748, 52613628461306161087953, 5126338275850981999654524, 531146069930403178373329794, 58319563977901655667747310206, 6764879932357508722274792757285]

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

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