a(1)=a(2)=1, a(n) = (a(n-1)+1)*(a(n-2)+1) for n > 2.

A096423

a(1)=a(2)=1, a(n) = (a(n-1)+1)*(a(n-2)+1) for n > 2.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =10a(4) =55a(5) =616a(6) =34552a(7) =21319201a(8) =736642386706

External references