Base 4 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,0,1.

A037786

Base 4 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,0,1.

Terms

    a(0) =3a(1) =14a(2) =56a(3) =225a(4) =903a(5) =3614a(6) =14456a(7) =57825a(8) =231303a(9) =925214a(10) =3700856a(11) =14803425a(12) =59213703a(13) =236854814a(14) =947419256a(15) =3789677025a(16) =15158708103a(17) =60634832414a(18) =242539329656a(19) =970157318625

External references