131313131313
domain: N
Appears in sequences
- Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,3.at n=11A037582
- Concatenation of segments of the digit sequence 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3....at n=11A137318
- a(n) = 13*(100^(n+1) - 1)/99.at n=5A156641
- A008619(n-1)-fold concatenation of A109613(n).at n=11A180116