a(n) = 9*a(n-1) - 9*a(n-2) for n>1, with a(0)=0, a(1)=1.

A057085

a(n) = 9*a(n-1) - 9*a(n-2) for n>1, with a(0)=0, a(1)=1.

Terms

    a(0) =0a(1) =1a(2) =9a(3) =72a(4) =567a(5) =4455a(6) =34992a(7) =274833a(8) =2158569a(9) =16953624a(10) =133155495a(11) =1045816839a(12) =8213952096a(13) =64513217313a(14) =506693386953

External references