This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A023763 #16 Jan 06 2014 15:17:15 %S A023763 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, %T A023763 40,42,43,44,45,46,47,48,49,56,57,98,105,106,112,113,114,147,154,155, %U A023763 161,162,163,168,169,170,171,196,203,204,210,211,212,217,218 %N A023763 Nialpdromes: digits in base 7 are in nonincreasing order. %H A023763 Vincenzo Librandi, <a href="/A023763/b023763.txt">Table of n, a(n) for n = 1..1001</a> (adapted to the new offset from _Bruno Berselli_) %t A023763 Select[Range[0, 2000], Max[Differences[IntegerDigits[#, 7]]]<=0&] (* _Vincenzo Librandi_, Dec 26 2012 *) %t A023763 Select[Range[0,218],GreaterEqual@@IntegerDigits[#,7]&] (* _Ray Chandler_, Jan 06 2014 *) %K A023763 nonn,base,easy %O A023763 1,3 %A A023763 _Olivier Gérard_