a(n) = shift(a(n-1); a(n-3)), a(0)=2, a(1)=3.

A063728

a(n) = shift(a(n-1); a(n-3)), a(0)=2, a(1)=3.

Terms

    a(0) =2a(1) =3a(2) =6a(3) =24a(4) =192a(5) =12288a(6) =206158430208

External references