a(n) = 16*a(n-1) - a(n-2) with a(0) = 0, a(1) = 3.

A001080

a(n) = 16*a(n-1) - a(n-2) with a(0) = 0, a(1) = 3.

Terms

    a(0) =0a(1) =3a(2) =48a(3) =765a(4) =12192a(5) =194307a(6) =3096720a(7) =49353213a(8) =786554688a(9) =12535521795a(10) =199781794032

External references