A142980 - cp's OEIS frontend

A142980 a(1) = 1, a(2) = 5, a(n+2) = 5a(n+1) + (n + 1)^2a(n).

n	a(n)
1	1
2	5
3	29
4	190
5	1414
6	11820
7	110004
8	1129200
9	12686256
10	154896480
11	2043108000
12	28958014080
13	438997622400
14	7088892491520
15	121487996448000
16	2202440792832000
17	42113131054848000
18	847071044402688000
19	17880009683784192000
20	395192695448291328000
21	9127967350755133440000

[1, 5, 29, 190, 1414, 11820, 110004, 1129200, 12686256, 154896480, 2043108000, 28958014080, 438997622400, 7088892491520, 121487996448000, 2202440792832000, 42113131054848000, 847071044402688000, 17880009683784192000, 395192695448291328000, 9127967350755133440000]

cp's OEIS Frontend

A142980 a(1) = 1, a(2) = 5, a(n+2) = 5a(n+1) + (n + 1)^2a(n).

Table of values

List of values

cp's OEIS Frontend

A142980 a(1) = 1, a(2) = 5, a(n+2) = 5*a(n+1) + (n + 1)^2*a(n).

Table of values

List of values

A142980 a(1) = 1, a(2) = 5, a(n+2) = 5a(n+1) + (n + 1)^2a(n).