A275209 - cp's OEIS frontend

A275209 Expansion of (A(x)^2+A(x^2))/2 where A(x) = A001006(x)-1.

n	a(n)
0	0
1	0
2	1
3	2
4	7
5	17
6	49
7	129
8	358
9	970
10	2679
11	7364
12	20414
13	56634
14	157877
15	441084
16	1236496
17	3474672
18	9790403
19	27648486
20	78256907
21	221951037
22	630723367
23	1795576937
24	5120487946
25	14625574662
26	41837955145
27	119851980508
28	343798121799
29	987445317761
30	2839518519233

[0, 0, 1, 2, 7, 17, 49, 129, 358, 970, 2679, 7364, 20414, 56634, 157877, 441084, 1236496, 3474672, 9790403, 27648486, 78256907, 221951037, 630723367, 1795576937, 5120487946, 14625574662, 41837955145, 119851980508, 343798121799, 987445317761, 2839518519233]

cp's OEIS Frontend

A275209 Expansion of (A(x)^2+A(x^2))/2 where A(x) = A001006(x)-1.

Table of values

List of values