Base-13 representation of a(n) is the concatenation of the base-13 representations of 1, 2, ..., n, n-1, ..., 1.

A260863

Base-13 representation of a(n) is the concatenation of the base-13 representations of 1, 2, ..., n, n-1, ..., 1.

Terms

    a(0) =0a(1) =1a(2) =196a(3) =33489a(4) =5664400a(5) =957345481a(6) =161792190756

External references