Smallest number m needing exactly n distinct digits in decimal representation of m*(m+1)/2.

A255678

Smallest number m needing exactly n distinct digits in decimal representation of m*(m+1)/2.

Terms

    a(0) =0a(1) =4a(2) =14a(3) =45a(4) =143a(5) =452a(6) =1431a(7) =4549a(8) =14334a(9) =46097

External references