a(n) = (F(8*n+5) - 2)/3, where F = A000045 (the Fibonacci sequence).

A049658

a(n) = (F(8*n+5) - 2)/3, where F = A000045 (the Fibonacci sequence).

Terms

    a(0) =1a(1) =77a(2) =3648a(3) =171409a(4) =8052605a(5) =378301056a(6) =17772097057a(7) =834910260653

External references