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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.

A379383 G.f. A(x) satisfies A(x) = sqrt( (1 + 2*x*A(x))/(1 - 2*x*A(x)^3) ).

Table of values

n a(n)
0 1
1 2
2 10
3 80
4 750
5 7680
6 83252
7 939008
8 10905942
9 129548288
10 1566565452
11 19220267008
12 238662840780
13 2993651974144
14 37876206019560
15 482802294325248
16 6194365014836582
17 79930063134392320
18 1036640587694252380
19 13505632613590630400
20 176673045664669396132
21 2319654465118014537728

List of values

[1, 2, 10, 80, 750, 7680, 83252, 939008, 10905942, 129548288, 1566565452, 19220267008, 238662840780, 2993651974144, 37876206019560, 482802294325248, 6194365014836582, 79930063134392320, 1036640587694252380, 13505632613590630400, 176673045664669396132, 2319654465118014537728]

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

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