a(n) = (1/5)*Sum_{k=0..n} binomial(n,k)*Fibonacci(k)*5^k.
A087567
a(n) = (1/5)*Sum_{k=0..n} binomial(n,k)*Fibonacci(k)*5^k.
Terms
- a(0) =1a(1) =7a(2) =68a(3) =609a(4) =5555a(5) =50456a(6) =458737a(7) =4169823a(8) =37904764a(9) =344559985a(10) =3132110411a(11) =28471412592a(12) =258809985953
External references
- oeis: A087567