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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.

A369158 Expansion of (1/x) * Series_Reversion( x / ((1+x)^2+x^4) ).

Table of values

n a(n)
0 1
1 2
2 5
3 14
4 43
5 142
6 495
7 1794
8 6686
9 25436
10 98311
11 384826
12 1522283
13 6075838
14 24437937
15 98956270
16 403080170
17 1650502292
18 6790018182
19 28050896964
20 116322826479
21 484029536374
22 2020386475025
23 8457397801150
24 35495812337114
25 149336478356692
26 629685490668799

List of values

[1, 2, 5, 14, 43, 142, 495, 1794, 6686, 25436, 98311, 384826, 1522283, 6075838, 24437937, 98956270, 403080170, 1650502292, 6790018182, 28050896964, 116322826479, 484029536374, 2020386475025, 8457397801150, 35495812337114, 149336478356692, 629685490668799]

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

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