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 A163338 #9 Aug 28 2020 02:05:59 %S A163338 1,2,6,3,5,7,16,4,8,48,17,15,9,47,49,18,14,10,46,50,54,19,13,11,45,51, %T A163338 53,55,20,24,12,44,40,52,56,60,21,23,25,43,41,39,57,59,61,142,22,26, %U A163338 30,42,38,70,58,62,426,143,141,27,29,31,37,71,69,63,425,427,144,140 %N A163338 Peano curve in an N x N grid, one-based, starting rightwards from the top-left corner. %C A163338 See the comments at A163334. %H A163338 A. Karttunen, <a href="/A163338/b163338.txt">Table of n, a(n) for n = 1..3321</a> %H A163338 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A163338 a(n) = A163334(n-1)+1 %Y A163338 Inverse: A163339. Transpose: A163340. %K A163338 nonn,tabl %O A163338 1,2 %A A163338 _Antti Karttunen_, Jul 29 2009 %E A163338 Name corrected by _Kevin Ryde_, Aug 28 2020