a(n) = 27a(n-1) - a(n-2), starting with a(0) = 2 and a(1) = 27.

A090248

a(n) = 27a(n-1) - a(n-2), starting with a(0) = 2 and a(1) = 27.

Terms

    a(0) =2a(1) =27a(2) =727a(3) =19602a(4) =528527a(5) =14250627a(6) =384238402a(7) =10360186227a(8) =279340789727

External references