A289846 - cp's OEIS frontend

A289846 p-INVERT of (1,0,1,0,1,0,1,0,1,...) (A059841), where p(S) = 1 - S - S^2.

n	a(n)
0	1
1	2
2	4
3	9
4	18
5	39
6	80
7	170
8	353
9	744
10	1553
11	3262
12	6824
13	14313
14	29970
15	62823
16	131596
17	275782
18	577777
19	1210704
20	2536657
21	5315210
22	11136700
23	23334969
24	48893202
25	102446199
26	214654136
27	449764562
28	942387569
29	1974580920
30	4137324929
31	8668915558
32	18163921856

[1, 2, 4, 9, 18, 39, 80, 170, 353, 744, 1553, 3262, 6824, 14313, 29970, 62823, 131596, 275782, 577777, 1210704, 2536657, 5315210, 11136700, 23334969, 48893202, 102446199, 214654136, 449764562, 942387569, 1974580920, 4137324929, 8668915558, 18163921856]

cp's OEIS Frontend

A289846 p-INVERT of (1,0,1,0,1,0,1,0,1,...) (A059841), where p(S) = 1 - S - S^2.

Table of values

List of values