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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.

A088794 Coefficient of x^n in A(x)^(2n) is A004123(n); self-convolution is A088222.

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 30
5 305
6 3905
7 59828
8 1063728
9 21497921
10 486476766
11 12184618776
12 334684804952
13 10005219881472
14 323438539163521
15 11244331792094312
16 418375698771595037
17 16590419690069321454
18 698526596162530976512

List of values

[1, 1, 1, 4, 30, 305, 3905, 59828, 1063728, 21497921, 486476766, 12184618776, 334684804952, 10005219881472, 323438539163521, 11244331792094312, 418375698771595037, 16590419690069321454, 698526596162530976512]

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

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