A289806 - cp's OEIS frontend

A289806 p-INVERT of (1,1,2,2,3,3,...) (A008619), where p(S) = 1 - S - S^2.

n	a(n)
0	1
1	3
2	9
3	26
4	74
5	211
6	600
7	1708
8	4860
9	13832
10	39364
11	112029
12	318827
13	907366
14	2582312
15	7349121
16	20915193
17	59523497
18	169400608
19	482104856
20	1372044007
21	3904762096
22	11112739032
23	31626246588
24	90006565434
25	256153755080
26	728999555983
27	2074692805003
28	5904462080604

[1, 3, 9, 26, 74, 211, 600, 1708, 4860, 13832, 39364, 112029, 318827, 907366, 2582312, 7349121, 20915193, 59523497, 169400608, 482104856, 1372044007, 3904762096, 11112739032, 31626246588, 90006565434, 256153755080, 728999555983, 2074692805003, 5904462080604]

cp's OEIS Frontend

A289806 p-INVERT of (1,1,2,2,3,3,...) (A008619), where p(S) = 1 - S - S^2.

Table of values

List of values