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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.

A381817 Expansion of (1/x) * Series_Reversion( x * (1-x) / C(x) ), where C(x) is the g.f. of A000108.

Table of values

n a(n)
0 1
1 2
2 8
3 41
4 239
5 1507
6 10016
7 69123
8 490676
9 3560150
10 26285896
11 196862679
12 1491921261
13 11420072162
14 88166571504
15 685724643699
16 5367842153463
17 42259058503891
18 334373741310812
19 2657683458672907
20 21209720057079565
21 169886023881795700
22 1365290865904393560

List of values

[1, 2, 8, 41, 239, 1507, 10016, 69123, 490676, 3560150, 26285896, 196862679, 1491921261, 11420072162, 88166571504, 685724643699, 5367842153463, 42259058503891, 334373741310812, 2657683458672907, 21209720057079565, 169886023881795700, 1365290865904393560]

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

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