Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 3,0,1,2.

A037764

Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 3,0,1,2.

Terms

    a(0) =3a(1) =30a(2) =301a(3) =3012a(4) =30123a(5) =301230a(6) =3012301a(7) =30123012a(8) =301230123a(9) =3012301230a(10) =30123012301a(11) =301230123012

External references