a(n+2) = (2*n + 3)*a(n+1) + (n + 1)^2*a(n), a(0) = 1, a(1) = 0.
A054766
a(n+2) = (2*n + 3)*a(n+1) + (n + 1)^2*a(n), a(0) = 1, a(1) = 0.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =5a(4) =44a(5) =476a(6) =6336a(7) =99504a(8) =1803024a(9) =37019664a(10) =849418560a(11) =21539756160a(12) =598194037440
External references
- oeis: A054766