A023757 Plaindromes: numbers whose digits in base 16 are in nondecreasing order.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79

Offset: 1

Author

Olivier Gérard

Keywords

• nonn
• base
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..6000
• Eric Weisstein's World of Mathematics, Digit.
• Eric Weisstein's World of Mathematics, Plaindrome.

Programs

Mathematica

Select[Range[0,79],LessEqual@@IntegerDigits[#,16]&] (* Ray Chandler, Jan 06 2014 *)

Extensions

Change offset to 1 by Ray Chandler, Jan 06 2014