A291404 - cp's OEIS frontend

A291404 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - S^2 - 2 S^4.

n	a(n)
0	0
1	1
2	2
3	4
4	12
5	23
6	42
7	89
8	188
9	404
10	856
11	1763
12	3652
13	7641
14	16030
15	33612
16	70252
17	146623
18	306334
19	640637
20	1340024
21	2802056
22	5857264
23	12243403
24	25596040
25	53515853
26	111889138
27	233922392
28	489039852
29	1022399607
30	2137493106
31	4468804953
32	9342779572
33	19532522316

[0, 1, 2, 4, 12, 23, 42, 89, 188, 404, 856, 1763, 3652, 7641, 16030, 33612, 70252, 146623, 306334, 640637, 1340024, 2802056, 5857264, 12243403, 25596040, 53515853, 111889138, 233922392, 489039852, 1022399607, 2137493106, 4468804953, 9342779572, 19532522316]

cp's OEIS Frontend

A291404 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - S^2 - 2 S^4.

Table of values

List of values