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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.

A379330 G.f. A(x) satisfies A(x) = 1/sqrt( (1 - 2*x*A(x)^2) * (1 - 2*x*A(x)) ).

Table of values

n a(n)
0 1
1 2
2 10
3 66
4 500
5 4112
6 35702
7 322114
8 2990450
9 28382486
10 274151074
11 2686200302
12 26634199776
13 266738477892
14 2694291026378
15 27416542767134
16 280790643343716
17 2892142875601024
18 29939599990333394
19 311334925950172590
20 3250627732373638716
21 34063930480000774400
22 358149513590192454578

List of values

[1, 2, 10, 66, 500, 4112, 35702, 322114, 2990450, 28382486, 274151074, 2686200302, 26634199776, 266738477892, 2694291026378, 27416542767134, 280790643343716, 2892142875601024, 29939599990333394, 311334925950172590, 3250627732373638716, 34063930480000774400, 358149513590192454578]

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

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