a(1) = 1, a(2) = 8, a(n+2) = 8*a(n+1) + (n + 1)*(n + 2)*a(n).
A142986
a(1) = 1, a(2) = 8, a(n+2) = 8*a(n+1) + (n + 1)*(n + 2)*a(n).
Terms
- a(0) =1a(1) =8a(2) =70a(3) =656a(4) =6648a(5) =72864a(6) =862128a(7) =10977408a(8) =149892480a(9) =2187106560a(10) =33985025280a(11) =560578268160
External references
- oeis: A142986