a(1)=1, a(n) = n*16^(n-1) + a(n-1).

A014931

a(1)=1, a(n) = n*16^(n-1) + a(n-1).

Terms

    a(0) =1a(1) =33a(2) =801a(3) =17185a(4) =344865a(5) =6636321a(6) =124076833a(7) =2271560481a(8) =40926266145a(9) =728121033505

External references