A023763 - OEIS

A023763

Nialpdromes: digits in base 7 are in nonincreasing order.

0, 1, 2, 3, 4, 5, 6, 7, 8, 14, 15, 16, 21, 22, 23, 24, 28, 29, 30, 31, 32, 35, 36, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 56, 57, 98, 105, 106, 112, 113, 114, 147, 154, 155, 161, 162, 163, 168, 169, 170, 171, 196, 203, 204, 210, 211, 212, 217, 218

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1001 (adapted to the new offset from Bruno Berselli)

MATHEMATICA

Select[Range[0, 2000], Max[Differences[IntegerDigits[#, 7]]]<=0&] (* Vincenzo Librandi, Dec 26 2012 *)

Select[Range[0, 218], GreaterEqual@@IntegerDigits[#, 7]&] (* Ray Chandler, Jan 06 2014 *)

CROSSREFS

Sequence in context: A222260 A032991 A032870 * A032904 A208530 A088416

Adjacent sequences: A023760 A023761 A023762 * A023764 A023765 A023766

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved