a(n) = the smallest positive number, not ending in 0, whose square has a substring of exactly n identical digits.

A167712

a(n) = the smallest positive number, not ending in 0, whose square has a substring of exactly n identical digits.

Terms

    a(0) =1a(1) =12a(2) =38a(3) =1291a(4) =10541a(5) =57735a(6) =364585a(7) =1197219a(8) =50820359a(9) =169640142a(10) =298142397a(11) =4472135955a(12) =1490711985

External references