A142989 - cp's OEIS frontend

A142989 a(1) = 1, a(2) = 5, a(n+2) = 5a(n+1)+(n+1)(n+3)*a(n).

n	a(n)
1	1
2	5
3	33
4	240
5	1992
6	18360
7	187416
8	2093760
9	25462080
10	334592640
11	4728412800
12	71488811520
13	1151817408000
14	19699405286400
15	356504125824000
16	6805868977152000
17	136702533123072000
18	2881808345235456000

[1, 5, 33, 240, 1992, 18360, 187416, 2093760, 25462080, 334592640, 4728412800, 71488811520, 1151817408000, 19699405286400, 356504125824000, 6805868977152000, 136702533123072000, 2881808345235456000]

cp's OEIS Frontend

A142989 a(1) = 1, a(2) = 5, a(n+2) = 5a(n+1)+(n+1)(n+3)*a(n).

Table of values

List of values

cp's OEIS Frontend

A142989 a(1) = 1, a(2) = 5, a(n+2) = 5*a(n+1)+(n+1)*(n+3)*a(n).

Table of values

List of values

A142989 a(1) = 1, a(2) = 5, a(n+2) = 5a(n+1)+(n+1)(n+3)*a(n).