Smallest number that contains the numbers from 1 to n as substrings.

A035239

Smallest number that contains the numbers from 1 to n as substrings.

Terms

    a(0) =1a(1) =12a(2) =123a(3) =1234a(4) =12345a(5) =123456a(6) =1234567a(7) =12345678a(8) =123456789a(9) =1023456789a(10) =11023456789a(11) =101123456789

External references