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 A335535 #5 Jun 13 2020 08:01:18 %S A335535 0,1,2,3,5,4,7,6,10,11,8,9,15,14,13,12,21,20,23,22,16,17,18,19,31,30, %T A335535 29,28,26,27,24,25,42,43,40,41,47,46,45,44,32,33,34,35,37,36,39,38,63, %U A335535 62,61,60,58,59,56,57,53,52,55,54,48,49,50,51,87,86,85,84 %N A335535 Nim fourth-power of n. %H A335535 Rémy Sigrist, <a href="/A335535/b335535.txt">Table of n, a(n) for n = 0..10000</a> %H A335535 J. H. Conway, <a href="https://doi.org/10.1016/0012-365X(90)90008-6">Integral lexicographic codes</a>, Discrete Mathematics 83.2-3 (1990): 219-235. See Table 3. %Y A335535 A column of the array in A335162. %K A335535 nonn %O A335535 0,3 %A A335535 _Rémy Sigrist_, Jun 13 2020