A142981 - cp's OEIS frontend

A142981 a(1) = 1, a(2) = 7, a(n+2) = 7a(n+1) + (n+1)^2a(n).

n	a(n)
1	1
2	7
3	53
4	434
5	3886
6	38052
7	406260
8	4708368
9	58959216
10	794092320
11	11454567840
12	176267145600
13	2883327788160
14	49972442123520
15	914939341344000
16	17648374867200000
17	357763095454464000
18	7604722004802048000
19	169148296960860672000
20	3929342722459564032000
21	95164717841561217024000

[1, 7, 53, 434, 3886, 38052, 406260, 4708368, 58959216, 794092320, 11454567840, 176267145600, 2883327788160, 49972442123520, 914939341344000, 17648374867200000, 357763095454464000, 7604722004802048000, 169148296960860672000, 3929342722459564032000, 95164717841561217024000]

cp's OEIS Frontend

A142981 a(1) = 1, a(2) = 7, a(n+2) = 7a(n+1) + (n+1)^2a(n).

Table of values

List of values

cp's OEIS Frontend

A142981 a(1) = 1, a(2) = 7, a(n+2) = 7*a(n+1) + (n+1)^2*a(n).

Table of values

List of values

A142981 a(1) = 1, a(2) = 7, a(n+2) = 7a(n+1) + (n+1)^2a(n).