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 A023760 Nialpdromes: digits in base 4 are in nonincreasing order. 4
 0, 1, 2, 3, 4, 5, 8, 9, 10, 12, 13, 14, 15, 16, 20, 21, 32, 36, 37, 40, 41, 42, 48, 52, 53, 56, 57, 58, 60, 61, 62, 63, 64, 80, 84, 85, 128, 144, 148, 149, 160, 164, 165, 168, 169, 170, 192, 208, 212, 213, 224, 228, 229, 232, 233, 234, 240, 244, 245, 248 (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, 4000], Max[Differences[IntegerDigits[#, 4]]] <= 0 &] (* Vincenzo Librandi, Dec 26 2012 *) Select[Range[0, 250], GreaterEqual@@IntegerDigits[#, 4] &] (* Ray Chandler, Jan 06 2014 *) CROSSREFS Cf. A023786 (subset), A031999 (slightly different version). Sequence in context: A329296 A032867 A031999 * A032901 A260113 A005792 Adjacent sequences:  A023757 A023758 A023759 * A023761 A023762 A023763 KEYWORD nonn,base,easy AUTHOR STATUS approved

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Last modified December 7 22:29 EST 2019. Contains 329850 sequences. (Running on oeis4.)