Begin with 3, multiply each digit by 2, keeping the memory of the groupings of the preceding digits.

A102254

Begin with 3, multiply each digit by 2, keeping the memory of the groupings of the preceding digits.

Terms

    a(0) =3a(1) =6a(2) =12a(3) =24a(4) =48a(5) =816a(6) =16212a(7) =212424a(8) =424848a(9) =84816816

External references