A369439 - cp's OEIS frontend

A369439 Expansion of (1/x) * Series_Reversion( x / ((1+x)^2 * (1+x^2)) ).

n	a(n)
0	1
1	2
2	6
3	22
4	89
5	382
6	1708
7	7870
8	37108
9	178184
10	868318
11	4283402
12	21347902
13	107330004
14	543707480
15	2772469998
16	14219396908
17	73303128344
18	379621891640
19	1974078923416
20	10303600000553
21	53960438323438
22	283461807342876
23	1493252678987602
24	7886649917261724

[1, 2, 6, 22, 89, 382, 1708, 7870, 37108, 178184, 868318, 4283402, 21347902, 107330004, 543707480, 2772469998, 14219396908, 73303128344, 379621891640, 1974078923416, 10303600000553, 53960438323438, 283461807342876, 1493252678987602, 7886649917261724]

cp's OEIS Frontend

A369439 Expansion of (1/x) * Series_Reversion( x / ((1+x)^2 * (1+x^2)) ).

Table of values

List of values