a(n) = 16*a(n-1) - 61*a(n-2) for n > 1; a(0) = 3, a(1) = 27.

A163474

a(n) = 16*a(n-1) - 61*a(n-2) for n > 1; a(0) = 3, a(1) = 27.

Terms

    a(0) =3a(1) =27a(2) =249a(3) =2337a(4) =22203a(5) =212691a(6) =2048673a(7) =19804617a(8) =191904819a(9) =1862395467a(10) =18092133513a(11) =175868012721

External references