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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.

A351812 G.f. A(x) satisfies: A(x) = 1 + x * A(x/(1 - 6*x)) / (1 - 6*x)^2.

Table of values

n a(n)
0 1
1 1
2 13
3 139
4 1531
5 19021
6 271453
7 4358179
8 76896931
9 1471496341
10 30333401893
11 670125430219
12 15784342627531
13 394467249489661
14 10415430504486733
15 289527454704656659
16 8447556960083354131
17 258008113711846390981
18 8228947382557338981973
19 273472796359924298018299

List of values

[1, 1, 13, 139, 1531, 19021, 271453, 4358179, 76896931, 1471496341, 30333401893, 670125430219, 15784342627531, 394467249489661, 10415430504486733, 289527454704656659, 8447556960083354131, 258008113711846390981, 8228947382557338981973, 273472796359924298018299]

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

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