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 A004183 #6 Oct 24 2023 20:40:47 %S A004183 0,1,2,3,4,5,6,7,0,9,10,11,12,13,14,15,16,17,1,19,20,21,22,23,24,25, %T A004183 26,27,2,29,30,31,32,33,34,35,36,37,3,39,40,41,42,43,44,45,46,47,4,49, %U A004183 50,51,52,53,54,55,56,57,5,59,60,61,62,63,64,65,66,67,6,69,70,71 %N A004183 Omit 8's from n. %K A004183 nonn,base %O A004183 0,3 %A A004183 _N. J. A. Sloane_