A142982 - cp's OEIS frontend

A142982 a(1) = 1, a(2) = 9, a(n+2) = 9a(n+1) + (n + 1)^2a(n).

n	a(n)
1	1
2	9
3	85
4	846
5	8974
6	101916
7	1240308
8	16156656
9	224789616
10	3331795680
11	52465122720
12	875333381760
13	15432978107520
14	286828144485120
15	5606317009440000
16	114993185594112000
17	2470155824763648000
18	55464433059571200000
19	1299510384759562752000
20	31718253797341267968000

[1, 9, 85, 846, 8974, 101916, 1240308, 16156656, 224789616, 3331795680, 52465122720, 875333381760, 15432978107520, 286828144485120, 5606317009440000, 114993185594112000, 2470155824763648000, 55464433059571200000, 1299510384759562752000, 31718253797341267968000]

cp's OEIS Frontend

A142982 a(1) = 1, a(2) = 9, a(n+2) = 9a(n+1) + (n + 1)^2a(n).

Table of values

List of values

cp's OEIS Frontend

A142982 a(1) = 1, a(2) = 9, a(n+2) = 9*a(n+1) + (n + 1)^2*a(n).

Table of values

List of values

A142982 a(1) = 1, a(2) = 9, a(n+2) = 9a(n+1) + (n + 1)^2a(n).