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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.

A135865 G.f. A(x) satisfies: A(x) = 1 + x*A(4x)^(1/2).

Table of values

n a(n)
0 1
1 1
2 2
3 14
4 420
5 52822
6 26933340
7 55104785932
8 451307797531080
9 14787550509729279590
10 1938204238967340827449260
11 1016173347424012723201485482596
12 2131067935523127187022102005624003320

List of values

[1, 1, 2, 14, 420, 52822, 26933340, 55104785932, 451307797531080, 14787550509729279590, 1938204238967340827449260, 1016173347424012723201485482596, 2131067935523127187022102005624003320]

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

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