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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.

A381882 Expansion of (1/x) * Series_Reversion( x / ((1+x)^3 * C(x)) ), where C(x) is the g.f. of A000108.

Table of values

n a(n)
0 1
1 4
2 24
3 175
4 1428
5 12525
6 115468
7 1103777
8 10844715
9 108860766
10 1111722956
11 11514401451
12 120666441067
13 1277161022725
14 13633269293868
15 146606818816257
16 1586739194404521
17 17271207134469417
18 188942438655850740
19 2076317084779878706
20 22909617070555385010

List of values

[1, 4, 24, 175, 1428, 12525, 115468, 1103777, 10844715, 108860766, 1111722956, 11514401451, 120666441067, 1277161022725, 13633269293868, 146606818816257, 1586739194404521, 17271207134469417, 188942438655850740, 2076317084779878706, 22909617070555385010]

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

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