a(n) = 18*a(n-1) - 78*a(n-2) for n > 1; a(0) = 3, a(1) = 30.

A163475

a(n) = 18*a(n-1) - 78*a(n-2) for n > 1; a(0) = 3, a(1) = 30.

Terms

    a(0) =3a(1) =30a(2) =306a(3) =3168a(4) =33156a(5) =349704a(6) =3708504a(7) =39476160a(8) =421307568a(9) =4504395744a(10) =48217133088a(11) =516565527552

External references