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 A004469 #14 Oct 26 2023 00:17:16 %S A004469 0,4,8,12,6,2,14,10,11,15,3,7,13,9,5,1,64,68,72,76,70,66,78,74,75,79, %T A004469 67,71,77,73,69,65,128,132,136,140,134,130,142,138,139,143,131,135, %U A004469 141,137,133,129,192,196,200,204,198,194,206,202,203,207,195,199,205,201 %N A004469 Nim product 4 * n. %D A004469 J. H. Conway, On Numbers and Games. Academic Press, NY, 1976, pp. 51-53. %H A004469 R. J. Mathar, <a href="/A004469/b004469.txt">Table of n, a(n) for n = 0..1000</a> %H A004469 <a href="/index/Ni#Nimmult">Index entries for sequences related to Nim-multiplication</a> %F A004469 a(n) = A051775(4,n). %K A004469 nonn %O A004469 0,2 %A A004469 _N. J. A. Sloane_ %E A004469 More terms from _Erich Friedman_