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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.

A369504 Expansion of (1/x) * Series_Reversion( x / ((1+x)^2+x^3)^2 ).

Table of values

n a(n)
0 1
1 4
2 22
3 142
4 1005
5 7546
6 59033
7 475962
8 3927204
9 33001024
10 281449964
11 2429922400
12 21196031340
13 186521336460
14 1653830553417
15 14761130834428
16 132516050272100
17 1195778542160992
18 10839917478886459
19 98671228898404032
20 901509955793840923

List of values

[1, 4, 22, 142, 1005, 7546, 59033, 475962, 3927204, 33001024, 281449964, 2429922400, 21196031340, 186521336460, 1653830553417, 14761130834428, 132516050272100, 1195778542160992, 10839917478886459, 98671228898404032, 901509955793840923]

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

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