A023786 -id:A023786 - cp's OEIS frontend

A023760 Nialpdromes: digits in base 4 are in nonincreasing order.

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

Offset: 1

Olivier Gérard

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

Cf. A023786 (subset), A031999 (slightly different version).

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 *)

A031999 Numbers whose base-4 digits are in nonincreasing order.

Original entry on oeis.org

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

Offset: 1

Clark Kimberling

Identical to A023760 apart from its first term. - Charles R Greathouse IV, May 03 2016

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Cf. A007090, A023760, A023786 (subset).

Select[Range[300], Max[Differences[IntegerDigits[#, 4]]] < 1 &] (* Harvey P. Dale, Apr 27 2017 *)

cp's OEIS Frontend

A023760 Nialpdromes: digits in base 4 are in nonincreasing order.

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