A291032 - cp's OEIS frontend

A291032 p-INVERT of the positive integers, where p(S) = 1 - S - S^2 - S^3 + S^4.

n	a(n)
0	1
1	4
2	15
3	54
4	188
5	645
6	2208
7	7570
8	25982
9	89190
10	306095
11	1050268
12	3603276
13	12361763
14	42409154
15	145491117
16	499126660
17	1712311759
18	5874263702
19	20152234481
20	69134134820
21	237171010852
22	813636681973
23	2791253840066
24	9575645985794
25	32850107071454
26	112695214040224

[1, 4, 15, 54, 188, 645, 2208, 7570, 25982, 89190, 306095, 1050268, 3603276, 12361763, 42409154, 145491117, 499126660, 1712311759, 5874263702, 20152234481, 69134134820, 237171010852, 813636681973, 2791253840066, 9575645985794, 32850107071454, 112695214040224]

cp's OEIS Frontend

A291032 p-INVERT of the positive integers, where p(S) = 1 - S - S^2 - S^3 + S^4.

Table of values

List of values