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 A222197 #14 Feb 16 2025 08:33:19 %S A222197 6,82,850,63674,2861964,1087362018,218915964618,404126474166012, %T A222197 374905251599545986,3300767481388100805696,14292173292228195059141732, %U A222197 595370485568270695379595524706,12097705655943392593368119042729446,2376002864597357261596276659315012706002,227092183804629590129597176335482393366366980 %N A222197 Number of Hamiltonian cycles in the graph C_n X P_n. %H A222197 Artem M. Karavaev, <a href="/A222197/b222197.txt">Table of n, a(n) for n = 3..22</a> %H A222197 Artem M. Karavaev, <a href="https://web.archive.org/web/20161024010518/http://flowproblem.ru/cycles/hamilton-cycles">Hamilton Cycles</a> %H A222197 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HamiltonianCycle.html">Hamiltonian Cycle</a> %H A222197 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/StackedPrismGraph.html">Stacked Prism Graph</a> %K A222197 nonn %O A222197 3,1 %A A222197 _N. J. A. Sloane_, Feb 14 2013