A023770 Nialpdromes: digits in base 15 are in nonincreasing order.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 30, 31, 32, 45, 46, 47, 48, 60, 61, 62, 63, 64, 75, 76, 77, 78, 79, 80, 90, 91, 92, 93, 94, 95, 96, 105, 106, 107, 108, 109, 110, 111, 112, 120, 121, 122, 123, 124, 125, 126, 127, 128, 135, 136, 137

Offset

1,3

Links

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

Mathematica

Select[Range[0, 1000], Max[Differences[IntegerDigits[#, 15]]]<=0&] (* Vincenzo Librandi, Dec 27 2012 *)
Select[Range[0, 137], GreaterEqual@@IntegerDigits[#, 15]&] (* Ray Chandler, Jan 06 2014 *)

Crossrefs

Sequence in context: A128829 A342478 A194967 * A371864 A357979 A023797

Adjacent sequences: A023767 A023768 A023769 * A023771 A023772 A023773

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved