a(n) = ((8 + sqrt(5))^n - (8 - sqrt(5))^n)/(2*sqrt(5)).

A153885

a(n) = ((8 + sqrt(5))^n - (8 - sqrt(5))^n)/(2*sqrt(5)).

Terms

    a(0) =1a(1) =16a(2) =197a(3) =2208a(4) =23705a(5) =249008a(6) =2585533a(7) =26677056a(8) =274286449a(9) =2814636880a(10) =28851289589a(11) =295557057504

External references