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 A064863 #5 Jul 02 2025 20:02:33 %S A064863 2,8,2,4,6,4,8,8,8,2,26,4,20,16,4,16,26,12,2,2,8,52,26,8,26,40,28,12, %T A064863 28,2,38,40,38,40,12,12,46,8,20,8,46,12,50,64,8,30,58,12,52,18,22,40, %U A064863 62,40,60,32,2,68,26,2,72,42,4,80,40,64,46,48,34,8,22,20,90,34,22,8,90 %N A064863 Period of continued fraction for sqrt(11)*n. %K A064863 nonn %O A064863 1,1 %A A064863 _R. K. Guy_, Oct 26 2001