A023771 Nialpdromes: digits in base 16 are in nonincreasing order.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 32, 33, 34, 48, 49, 50, 51, 64, 65, 66, 67, 68, 80, 81, 82, 83, 84, 85, 96, 97, 98, 99, 100, 101, 102, 112, 113, 114, 115, 116, 117, 118, 119, 128, 129, 130, 131, 132, 133, 134, 135, 136, 144, 145

Offset

1,3

Links

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

Eric Weisstein's World of Mathematics, Digit.

Eric Weisstein's World of Mathematics, Nialpdrome.

Mathematica

Select[Range[0, 500], Max[Differences[IntegerDigits[#, 16]]]<=0&] (* Vincenzo Librandi, Dec 27 2012 *)
Select[Range[0, 145], GreaterEqual@@IntegerDigits[#, 16]&] (* Ray Chandler, Jan 06 2014 *)

Crossrefs

Sequence in context: A113219 A179978 A370132 * A132033 A194966 A133137

Adjacent sequences: A023768 A023769 A023770 * A023772 A023773 A023774

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved