Smallest n-digit number in which the k-th digit (from the right!) is a divisor of k, greater than 1 unless k has no single-digit divisor > 1.

A069572

Smallest n-digit number in which the k-th digit (from the right!) is a divisor of k, greater than 1 unless k has no single-digit divisor > 1.

Terms

    a(0) =1a(1) =21a(2) =321a(3) =2321a(4) =52321a(5) =252321a(6) =7252321a(7) =27252321a(8) =327252321a(9) =2327252321a(10) =12327252321a(11) =212327252321

External references