A142984 - cp's OEIS frontend

A142984 a(1) = 1, a(2) = 4, a(n+2) = 4a(n+1) + (n + 1)(n + 2)*a(n).

n	a(n)
1	1
2	4
3	22
4	136
5	984
6	8016
7	73392
8	742464
9	8254080
10	99838080
11	1307301120
12	18407831040
13	277570298880
14	4460506444800
15	76131788544000
16	1375048700928000
17	26208041287680000
18	525597067634688000
19	11065538390925312000

[1, 4, 22, 136, 984, 8016, 73392, 742464, 8254080, 99838080, 1307301120, 18407831040, 277570298880, 4460506444800, 76131788544000, 1375048700928000, 26208041287680000, 525597067634688000, 11065538390925312000]

cp's OEIS Frontend

A142984 a(1) = 1, a(2) = 4, a(n+2) = 4a(n+1) + (n + 1)(n + 2)*a(n).

Table of values

List of values

cp's OEIS Frontend

A142984 a(1) = 1, a(2) = 4, a(n+2) = 4*a(n+1) + (n + 1)*(n + 2)*a(n).

Table of values

List of values

A142984 a(1) = 1, a(2) = 4, a(n+2) = 4a(n+1) + (n + 1)(n + 2)*a(n).