a(n) = S(n,4) where S(n,m) = Sum_{k=0..n} binomial(n,k)*Fibonacci(m*k).
A087426
a(n) = S(n,4) where S(n,m) = Sum_{k=0..n} binomial(n,k)*Fibonacci(m*k).
Terms
- a(0) =0a(1) =3a(2) =27a(3) =216a(4) =1701a(5) =13365a(6) =104976a(7) =824499a(8) =6475707a(9) =50860872a(10) =399466485a(11) =3137450517a(12) =24641856288a(13) =193539651939
External references
- oeis: A087426