Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 20 (most significant digit on right).

A061973

Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 20 (most significant digit on right).

Terms

    a(0) =1a(1) =19a(2) =57a(3) =741a(4) =1653a(5) =44707a(6) =1434853a(7) =4392463

External references