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 A288957 #5 Feb 16 2025 08:33:48 %S A288957 1,16,17745,1064918960,3271331573452800,504061943351318476800000, %T A288957 3858339886583692361602445155127296, %U A288957 1459317836184139215695519252141942969301860352,27183718698548427648295525981282802546303364746719379732625,24885268021937835128408553201681360058444589895177297993122070472908013568 %N A288957 Number of spanning trees in the n X n king graph. %H A288957 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KingGraph.html">King Graph</a> %H A288957 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SpanningTree.html">Spanning Tree</a> %K A288957 nonn %O A288957 1,2 %A A288957 _Eric W. Weisstein_, Jun 20 2017