cp's OEIS Frontend

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.

A219538 G.f. satisfies A(x) = 1 + x*A(x)^2*(1 + A(x))^2/2.

Table of values

n a(n)
0 1
1 2
2 12
3 98
4 924
5 9468
6 102432
7 1151410
8 13315692
9 157406876
10 1893480264
11 23103024084
12 285233168760
13 3556744196000
14 44730062281800
15 566683825859730
16 7225564521956940
17 92653105887920556
18 1194068058333608136
19 15457771628663418748
20 200916876963088849992

List of values

[1, 2, 12, 98, 924, 9468, 102432, 1151410, 13315692, 157406876, 1893480264, 23103024084, 285233168760, 3556744196000, 44730062281800, 566683825859730, 7225564521956940, 92653105887920556, 1194068058333608136, 15457771628663418748, 200916876963088849992]

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

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