a(n) = (1+n)*(2*a(n-1) - (n-2)*a(n-2)) with a(0) = a(1) = 1.
A361649
a(n) = (1+n)*(2*a(n-1) - (n-2)*a(n-2)) with a(0) = a(1) = 1.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =44a(4) =380a(5) =3768a(6) =42112a(7) =523072a(8) =7141248a(9) =106209920a(10) =1708188416a(11) =29525850624a(12) =545607622144
External references
- oeis: A361649