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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.

A379252 G.f. A(x) satisfies A(x) = ( (1 + x*A(x))/(1 - x*A(x)^3) )^2.

Table of values

n a(n)
0 1
1 4
2 40
3 572
4 9552
5 174004
6 3352440
7 67171500
8 1385457568
9 29220437860
10 627287390664
11 13661411796508
12 301096488681200
13 6703186665881876
14 150517000234338072
15 3404956079399106700
16 77526315562007606080
17 1775260286963982001860
18 40857405217738915499880
19 944584396250976659451388

List of values

[1, 4, 40, 572, 9552, 174004, 3352440, 67171500, 1385457568, 29220437860, 627287390664, 13661411796508, 301096488681200, 6703186665881876, 150517000234338072, 3404956079399106700, 77526315562007606080, 1775260286963982001860, 40857405217738915499880, 944584396250976659451388]

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

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