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 A032341 #20 May 05 2020 12:08:47 %S A032341 1,2,3,4,5,6,10,11,12,15,16,17,18,20,21,22,23,24,25,30,31,50,55,56,60, %T A032341 61,62,75,80,81,85,86,87,90,91,92,93,100,105,106,110,111,112 %N A032341 Duplicate of A023761. %H A032341 <a href="/A032341/b032341.txt">Table of n, a(n) for n = 1..43</a> %Y A032341 Cf. A000225, A023745, ..., A023757 (nondecreasing digits in base 2, 3, ..., 16). %Y A032341 Cf. A023758, A023759, ..., A023771 (nonincreasing digits in base 2, 3, ..., 16). %K A032341 dead %O A032341 1,2