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 A316963 #13 Jan 28 2019 06:42:48 %S A316963 0,1,2,4,3,6,7,8,5,9,13,12,11,10,15,16,17,18,19,14,20,26,25,24,23,22, %T A316963 21,28,29,30,31,32,33,34,27,35,43,42,41,40,39,38,37,36,45,46,47,48,49, %U A316963 50,51,52,53,44,54,64,63,62,61,60,59,58,57,56,55,66,67 %N A316963 Same as A316668, except numbering of the squares starts at 0 rather than 1. %C A316963 a(n) = A316668(n+1)-1. %C A316963 See A316668 for further information. %H A316963 Daniël Karssen, <a href="/A316963/b316963.txt">Table of n, a(n) for n = 0..9999</a> %H A316963 Daniël Karssen, <a href="/A316963/a316963.svg">Figure showing the first 26 steps of the sequence</a> %Y A316963 Cf. A316668 %K A316963 nonn %O A316963 0,3 %A A316963 _Daniël Karssen_, Jul 17 2018