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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.

A303923 G.f. A(x) satisfies: 1 = Sum_{n>=0} ( 1 + x*A(x)^n - A(x) )^n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 6
6 22
7 92
8 419
9 2066
10 10863
11 60459
12 354381
13 2177439
14 13979759
15 93527819
16 650509643
17 4694372980
18 35086564926
19 271174745565
20 2164066408692
21 17808271012127
22 150925549288155
23 1315804758238582
24 11787981398487995
25 108409978503340041
26 1022519935940220983
27 9882436548778410911
28 97788364370359938816

List of values

[1, 1, 1, 1, 2, 6, 22, 92, 419, 2066, 10863, 60459, 354381, 2177439, 13979759, 93527819, 650509643, 4694372980, 35086564926, 271174745565, 2164066408692, 17808271012127, 150925549288155, 1315804758238582, 11787981398487995, 108409978503340041, 1022519935940220983, 9882436548778410911, 97788364370359938816]

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

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