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 A303586 #36 Feb 07 2025 10:37:26 %S A303586 1,0,1,1,2,3,6,11,23,47,103,226,518,1200,2867,6946,17234,43393,111419, %T A303586 290242,768901,2065172,5630083,15549403,43527487,123343911,353864422, %U A303586 1026935904,3014535166,8945274505,26829206798,81293234754,248805520401,768882019073,2398686176048,7552071250781 %N A303586 Duplicate of A211694. %H A303586 Alois P. Heinz, <a href="/A303586/b303586.txt">Table of n, a(n) for n = 0..1132</a> %K A303586 dead %O A303586 0,5