A206308 - cp's OEIS frontend

A206308 a(n) = ((2n+2)(2n+3) - 1)a(n-1) + 2n(2n+1)a(n-2), a(0)=1, a(1)=19.

n	a(n)
0	1
1	19
2	799
3	57527
4	6327971
5	987163475
6	207304329751
7	56386777692271
8	19284277970756683
9	8099396747717806859
10	4098294754345210270655
11	2458976852607126162392999
12	1726201750530202565999885299
13	1401675821430524483591906862787

[1, 19, 799, 57527, 6327971, 987163475, 207304329751, 56386777692271, 19284277970756683, 8099396747717806859, 4098294754345210270655, 2458976852607126162392999, 1726201750530202565999885299, 1401675821430524483591906862787]

cp's OEIS Frontend

A206308 a(n) = ((2n+2)(2n+3) - 1)a(n-1) + 2n(2n+1)a(n-2), a(0)=1, a(1)=19.

Table of values

List of values

cp's OEIS Frontend

A206308 a(n) = ((2*n+2)*(2*n+3) - 1)*a(n-1) + 2*n*(2*n+1)*a(n-2), a(0)=1, a(1)=19.

Table of values

List of values

A206308 a(n) = ((2n+2)(2n+3) - 1)a(n-1) + 2n(2n+1)a(n-2), a(0)=1, a(1)=19.