A215342 - cp's OEIS frontend

A215342 Expansion of series reversion of x(1-x^3sum(k>=1, x^k)).

n	a(n)
1	1
2	0
3	0
4	0
5	1
6	1
7	1
8	1
9	6
10	12
11	19
12	27
13	71
14	166
15	329
16	579
17	1222
18	2756
19	5921
20	11754
21	24179
22	52372
23	114031
24	239726
25	502269
26	1074961
27	2333143
28	5017552
29	10714567
30	23006558
31	49861081
32	108122488
33	233691980
34	505329915
35	1097463037
36	2389325284
37	5199960642
38	11314793335
39	24663217250
40	53864633059

[1, 0, 0, 0, 1, 1, 1, 1, 6, 12, 19, 27, 71, 166, 329, 579, 1222, 2756, 5921, 11754, 24179, 52372, 114031, 239726, 502269, 1074961, 2333143, 5017552, 10714567, 23006558, 49861081, 108122488, 233691980, 505329915, 1097463037, 2389325284, 5199960642, 11314793335, 24663217250, 53864633059]

cp's OEIS Frontend

A215342 Expansion of series reversion of x(1-x^3sum(k>=1, x^k)).

Table of values

List of values

cp's OEIS Frontend

A215342 Expansion of series reversion of x*(1-x^3*sum(k>=1, x^k)).

Table of values

List of values

A215342 Expansion of series reversion of x(1-x^3sum(k>=1, x^k)).