A142990 - cp's OEIS frontend

A142990 a(1) = 1, a(2) = 7, a(n+2) = 7a(n+1)+(n+1)(n+3)*a(n).

n	a(n)
1	1
2	7
3	57
4	504
5	4896
6	51912
7	598392
8	7459200
9	100085760
10	1439061120
11	22083719040
12	360371773440
13	6232667212800
14	113901166310400
15	2193425619840000
16	44398776748032000
17	942498015750144000
18	20938290999865344000

[1, 7, 57, 504, 4896, 51912, 598392, 7459200, 100085760, 1439061120, 22083719040, 360371773440, 6232667212800, 113901166310400, 2193425619840000, 44398776748032000, 942498015750144000, 20938290999865344000]

cp's OEIS Frontend

A142990 a(1) = 1, a(2) = 7, a(n+2) = 7a(n+1)+(n+1)(n+3)*a(n).

Table of values

List of values

cp's OEIS Frontend

A142990 a(1) = 1, a(2) = 7, a(n+2) = 7*a(n+1)+(n+1)*(n+3)*a(n).

Table of values

List of values

A142990 a(1) = 1, a(2) = 7, a(n+2) = 7a(n+1)+(n+1)(n+3)*a(n).