Recurrence a(n) = 2^n*a(n-1) - a(n-2) with a(0)=0, a(1)=1.

A228467

Recurrence a(n) = 2^n*a(n-1) - a(n-2) with a(0)=0, a(1)=1.

Terms

    a(0) =0a(1) =1a(2) =4a(3) =31a(4) =492a(5) =15713a(6) =1005140a(7) =128642207a(8) =32931399852

External references