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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.

A271960 G.f. A(x) satisfies: A(x)^2 = A( (x + 2*A(x)^2)^2 ).

Table of values

n a(n)
1 1
2 2
3 9
4 50
5 312
6 2086
7 14613
8 105864
9 786627
10 5962110
11 45914544
12 358247214
13 2825957294
14 22499804332
15 180573770279
16 1459277489372
17 11864714598122
18 96985441764430
19 796580710229999
20 6570692234061404
21 54408498662798180
22 452104483291381134
23 3768693666865385520
24 31506775300298343840
25 264103426399414754616
26 2219265880819182687882
27 18690831189839369444283
28 157746446435747834724764
29 1333944139058301773582424

List of values

[1, 2, 9, 50, 312, 2086, 14613, 105864, 786627, 5962110, 45914544, 358247214, 2825957294, 22499804332, 180573770279, 1459277489372, 11864714598122, 96985441764430, 796580710229999, 6570692234061404, 54408498662798180, 452104483291381134, 3768693666865385520, 31506775300298343840, 264103426399414754616, 2219265880819182687882, 18690831189839369444283, 157746446435747834724764, 1333944139058301773582424]

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

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