a(0)=0; a(1)=1; a(2)=2; a(n)= a(n-1) + a(n-2)*a(n-3).
A063402
a(0)=0; a(1)=1; a(2)=2; a(n)= a(n-1) + a(n-2)*a(n-3).
Terms
- a(0) =0a(1) =1a(2) =2a(3) =2a(4) =4a(5) =8a(6) =16a(7) =48a(8) =176a(9) =944a(10) =9392a(11) =175536a(12) =9041584a(13) =1657675696
External references
- oeis: A063402