a(n) = Fibonacci(6n+4).

A103134

a(n) = Fibonacci(6n+4).

Terms

    a(0) =3a(1) =55a(2) =987a(3) =17711a(4) =317811a(5) =5702887a(6) =102334155a(7) =1836311903a(8) =32951280099a(9) =591286729879

External references