a(n+2) = (2n+3)*a(n+1) + (n+1)^2*a(n), a(0) = 0, a(1) = 1.
A054765
a(n+2) = (2n+3)*a(n+1) + (n+1)^2*a(n), a(0) = 0, a(1) = 1.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =19a(4) =160a(5) =1744a(6) =23184a(7) =364176a(8) =6598656a(9) =135484416a(10) =3108695040a(11) =78831037440
External references
- oeis: A054765