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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.

A369398 Expansion of (1/x) * Series_Reversion( x / (1+x)^2 * (1-x^3) ).

Table of values

n a(n)
0 1
1 2
2 5
3 15
4 52
5 198
6 797
7 3322
8 14195
9 61848
10 273792
11 1228131
12 5570200
13 25501610
14 117694557
15 546983631
16 2557677780
17 12024345942
18 56801925455
19 269483935384
20 1283469626512
21 6134259516564
22 29412031039568
23 141434223863670
24 681939435678239
25 3296147009539144

List of values

[1, 2, 5, 15, 52, 198, 797, 3322, 14195, 61848, 273792, 1228131, 5570200, 25501610, 117694557, 546983631, 2557677780, 12024345942, 56801925455, 269483935384, 1283469626512, 6134259516564, 29412031039568, 141434223863670, 681939435678239, 3296147009539144]

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

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