Base-7 representation of a(n) is the concatenation of the base-7 representations of 1, 2, ..., n, n-1, ..., 1.
A260857
Base-7 representation of a(n) is the concatenation of the base-7 representations of 1, 2, ..., n, n-1, ..., 1.
Terms
- a(0) =0a(1) =1a(2) =64a(3) =3249a(4) =160000a(5) =7845601a(6) =384473664a(7) =131870760799
External references
- oeis: A260857