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 A028811 #7 Jul 08 2025 18:52:53 %S A028811 3,5,6,7,10,12,13,14,17,19,20,21,24,26,27,28,31,33,34,35,38,40,41,42, %T A028811 45,47,48,52,54,55,56,59,61,62,63,66,68,69,70,73,75,76,77,80,82,83,84, %U A028811 87,89,90,91,94,96,97 %N A028811 Nonsquares mod 98. %K A028811 nonn,fini,full %O A028811 1,1 %A A028811 _N. J. A. Sloane_