A291021 - cp's OEIS frontend

A291021 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - S - S^2 - S^3 + S^4 + S^5.

n	a(n)
0	1
1	3
2	9
3	25
4	67
5	178
6	472
7	1249
8	3297
9	8685
10	22843
11	60014
12	157540
13	413289
14	1083693
15	2840521
16	7443331
17	19500394
18	51079696
19	133782385
20	350354841
21	917456901
22	2402365387
23	6290338310
24	16470047644
25	43122600825
26	112903347237
27	295598625697
28	773914899475

[1, 3, 9, 25, 67, 178, 472, 1249, 3297, 8685, 22843, 60014, 157540, 413289, 1083693, 2840521, 7443331, 19500394, 51079696, 133782385, 350354841, 917456901, 2402365387, 6290338310, 16470047644, 43122600825, 112903347237, 295598625697, 773914899475]

cp's OEIS Frontend

A291021 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - S - S^2 - S^3 + S^4 + S^5.

Table of values

List of values