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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.

A385421 Expansion of e.g.f. 1/(1 - arcsin(2*x))^(1/2).

Table of values

n a(n)
0 1
1 1
2 3
3 19
4 153
5 1689
6 21867
7 343995
8 6114993
9 124933425
10 2820098643
11 70897706595
12 1939085791305
13 57898697121225
14 1859540697970875
15 64312039377723915
16 2371651908598754145
17 93246340110716523105
18 3882169166979871734435
19 171024539858087082582195

List of values

[1, 1, 3, 19, 153, 1689, 21867, 343995, 6114993, 124933425, 2820098643, 70897706595, 1939085791305, 57898697121225, 1859540697970875, 64312039377723915, 2371651908598754145, 93246340110716523105, 3882169166979871734435, 171024539858087082582195]

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

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