A369440 - cp's OEIS frontend

A369440 Expansion of (1/x) * Series_Reversion( x / ((1+x) * (1+x^2)^2) ).

n	a(n)
0	1
1	1
2	3
3	9
4	30
5	107
6	396
7	1513
8	5915
9	23554
10	95202
11	389555
12	1610588
13	6717816
14	28234064
15	119452553
16	508330809
17	2174393331
18	9343913933
19	40319400738
20	174630125428
21	758916134002
22	3308320668768
23	14462616815619
24	63388694309005
25	278492994845776
26	1226241871745376

[1, 1, 3, 9, 30, 107, 396, 1513, 5915, 23554, 95202, 389555, 1610588, 6717816, 28234064, 119452553, 508330809, 2174393331, 9343913933, 40319400738, 174630125428, 758916134002, 3308320668768, 14462616815619, 63388694309005, 278492994845776, 1226241871745376]

cp's OEIS Frontend

A369440 Expansion of (1/x) * Series_Reversion( x / ((1+x) * (1+x^2)^2) ).

Table of values

List of values