a(n) = S(n,3) where S(n,m) = Sum_{k=0..n} binomial(n,k)*Fibonacci(m*k).

A087635

a(n) = S(n,3) where S(n,m) = Sum_{k=0..n} binomial(n,k)*Fibonacci(m*k).

Terms

    a(0) =0a(1) =2a(2) =12a(3) =64a(4) =336a(5) =1760a(6) =9216a(7) =48256a(8) =252672a(9) =1323008a(10) =6927360a(11) =36272128a(12) =189923328a(13) =994451456a(14) =5207015424a(15) =27264286720a(16) =142757658624a(17) =747488804864

External references