a(n) = L(L(n+1)+1), where L(n) are Lucas numbers A000032.

A005372

a(n) = L(L(n+1)+1), where L(n) are Lucas numbers A000032.

Terms

    a(0) =3a(1) =7a(2) =11a(3) =47a(4) =322a(5) =9349a(6) =1860498a(7) =10749957122

External references