a(0)=1; a(1)=1; a(2)=1; a(n) = a(n-1) + (1 + a(n-2))*(1 + a(n-3)).
A063404
a(0)=1; a(1)=1; a(2)=1; a(n) = a(n-1) + (1 + a(n-2))*(1 + a(n-3)).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =5a(4) =9a(5) =21a(6) =81a(7) =301a(8) =2105a(9) =26869a(10) =662881a(11) =57251101a(12) =17868890441
External references
- oeis: A063404