a(0) = a(1) = 1, a(2) = 2; a(n) = 2*a(n-2) + a(n-1)*a(n-3).
A134455
a(0) = a(1) = 1, a(2) = 2; a(n) = 2*a(n-2) + a(n-1)*a(n-3).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =24a(6) =112a(7) =944a(8) =22880a(9) =2564448a(10) =2420884672
External references
- oeis: A134455