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

A037736

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

Terms

    a(0) =2a(1) =21a(2) =210a(3) =2103a(4) =21032a(5) =210321a(6) =2103210a(7) =21032103a(8) =210321032a(9) =2103210321a(10) =21032103210a(11) =210321032103

External references