a(n) = 12*a(n-1) + 7*a(n-2).

Terms

a(0) =0a(1) =1a(2) =12a(3) =151a(4) =1896a(5) =23809a(6) =298980a(7) =3754423a(8) =47145936a(9) =592032193a(10) =7434407868a(11) =93357119767