A114910 a(n) is the largest base-8 string such that the n-th number coprime to 8 does not divide any substring of a(n).

75, 7773, 666666, 76764321, 7777777112, 777677767456, 77756664344152, 7777777577731365, 777776766661314425, 76767676767643755321, 7777777777376745252236, 777777777777777777374555

Offset: 2

Author

Don Reble, Feb 20 2006

Keywords

• nonn
• base

Examples

			a(3) = 7773 (base 8) because the 3rd number coprime to 8 is 5; and 5 does not divide any substring of a(3).