Least nonnegative difference between two numbers whose digits are all taken from a cumulative list of n mod 10 (see example).

A317231

Least nonnegative difference between two numbers whose digits are all taken from a cumulative list of n mod 10 (see example).

Terms

    a(0) =0a(1) =1a(2) =8a(3) =7a(4) =59a(5) =47a(6) =369a(7) =247a(8) =1469a(9) =247a(10) =1469a(11) =147a(12) =13569a(13) =17a(14) =135689a(15) =2a(16) =1355780a(17) =1a(18) =12446689a(19) =0a(20) =12446689a(21) =1

External references