a(n) = 8*a(n-1) - 14*a(n-2) for n > 1; a(0) = 3, a(1) = 20.

A164535

a(n) = 8*a(n-1) - 14*a(n-2) for n > 1; a(0) = 3, a(1) = 20.

Terms

    a(0) =3a(1) =20a(2) =118a(3) =664a(4) =3660a(5) =19984a(6) =108632a(7) =589280a(8) =3193392a(9) =17297216a(10) =93670240a(11) =507200896a(12) =2746223808a(13) =14868977920a(14) =80504690048a(15) =435871829504

External references