A114922 a(n) is the largest base-10 string such that the n-th number coprime to 10 does not divide any substring of a(n).

88, 999993, 88888888, 9898654321, 999998986863, 9999999999924214, 999999999999962944, 99999899999899978513, 9999999999999999976315, 99899899899899899899899899, 9999999999999999999999912715

Offset: 2

Author

David W. Wilson, Feb 17 2006

Keywords

• nonn
• base

Examples

			a(3) = 999993 (base 10) because the 3rd number coprime to 10 is 7, and 7 does not divide any substring of a(3).