a(n) = L(8*n+4)/7, where L = A000032 (the Lucas sequence).

A333718

a(n) = L(8*n+4)/7, where L = A000032 (the Lucas sequence).

Terms

    a(0) =1a(1) =46a(2) =2161a(3) =101521a(4) =4769326a(5) =224056801a(6) =10525900321a(7) =494493258286

External references