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

A037771

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

Terms

    a(0) =3a(1) =30a(2) =302a(3) =3021a(4) =30213a(5) =302130a(6) =3021302a(7) =30213021a(8) =302130213a(9) =3021302130a(10) =30213021302a(11) =302130213021

External references