a(n) = (1/7)*Sum_{k=0..n} binomial(n,k)*Fibonacci(k)*7^k.

A087584

a(n) = (1/7)*Sum_{k=0..n} binomial(n,k)*Fibonacci(k)*7^k.

Terms

    a(0) =1a(1) =9a(2) =122a(3) =1467a(4) =18205a(5) =223992a(6) =2762333a(7) =34044669a(8) =419657674a(9) =5172750495a(10) =63760719089a(11) =785929242096

External references