A291019 - cp's OEIS frontend

A291019 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - S - S^2 - S^3 + S^4.

n	a(n)
0	1
1	3
2	9
3	25
4	68
5	185
6	504
7	1373
8	3739
9	10180
10	27714
11	75445
12	205376
13	559064
14	1521840
15	4142609
16	11276581
17	30695881
18	83556891
19	227449066
20	619135745
21	1685339900
22	4587637263
23	12487934387
24	33993205996
25	92532358762
26	251880840375
27	685640764594
28	1866371634554

[1, 3, 9, 25, 68, 185, 504, 1373, 3739, 10180, 27714, 75445, 205376, 559064, 1521840, 4142609, 11276581, 30695881, 83556891, 227449066, 619135745, 1685339900, 4587637263, 12487934387, 33993205996, 92532358762, 251880840375, 685640764594, 1866371634554]

cp's OEIS Frontend

A291019 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - S - S^2 - S^3 + S^4.

Table of values

List of values