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 A290713 #12 Feb 16 2025 08:33:50 %S A290713 2,3,10,46,234,1584,11472,109552,1066194,14035554 %N A290713 Number of irredundant sets in the n X n black bishop graph. %H A290713 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BlackBishopGraph.html">Black Bishop Graph</a> %H A290713 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/IrredundantSet.html">Irredundant Set</a> %Y A290713 Cf. A290712, A290714, A291060. %K A290713 nonn,more %O A290713 1,1 %A A290713 _Eric W. Weisstein_, Aug 09 2017 %E A290713 a(7)-a(10) from _Andrew Howroyd_, Aug 19 2017