Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,3.
A037582
Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,3.
Terms
- a(0) =1a(1) =13a(2) =131a(3) =1313a(4) =13131a(5) =131313a(6) =1313131a(7) =13131313a(8) =131313131a(9) =1313131313a(10) =13131313131a(11) =131313131313
External references
- oeis: A037582