A023747 Plaindromes: numbers whose digits in base 5 are in nondecreasing order.

0, 1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 18, 19, 24, 31, 32, 33, 34, 37, 38, 39, 43, 44, 49, 62, 63, 64, 68, 69, 74, 93, 94, 99, 124, 156, 157, 158, 159, 162, 163, 164, 168, 169, 174, 187, 188, 189, 193, 194, 199, 218, 219, 224, 249, 312, 313, 314, 318, 319

Offset: 1

Author

Olivier Gérard

Keywords

• nonn
• base
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Programs

Mathematica

Select[Range[0,319],LessEqual@@IntegerDigits[#,5]&] (* Ray Chandler, Jan 06 2014 *)

Extensions

Change offset to 1 by Ray Chandler, Jan 06 2014