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 A151528 #9 Feb 16 2025 08:33:09 %S A151528 1,2,6,16,48,158,508,1708,5787,19901,68974,241240,848449,3001597, %T A151528 10666729,38065825,136329386 %N A151528 Number of 1-sided polykites with n cells. %H A151528 Ed Pegg, Jr., <a href="http://demonstrations.wolfram.com/PolyformExplorer/">Illustrations of polyforms</a> %H A151528 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Polykite.html">Polykite</a> %K A151528 nonn,hard,more %O A151528 1,2 %A A151528 _Ed Pegg Jr_, May 13 2009 %E A151528 a(13)-a(17) from _Joseph Myers_, Nov 28 2010