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 A268894 #21 Feb 16 2025 08:33:30 %S A268894 1,4,144,4016,152230,14557092,1966154260,761411682704,411068703517542, %T A268894 684434716944151900,1572754514153890134760,11579615738168536799184984, %U A268894 117186519917858266359631481672,3877921919790491112398750141807648,176258463464553583688099296874564393850,26493868301658838913487471166447301509560736 %N A268894 Number of Hamiltonian paths in C_n X P_n. %C A268894 This is the number of undirected paths. %H A268894 Artem M. Karavaev, <a href="https://web.archive.org/web/20161015205133/http://flowproblem.ru/paths/hamilton-paths">Hamilton Paths</a> %H A268894 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HamiltonianPath.html">Hamiltonian Path</a> %H A268894 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/StackedPrismGraph.html">Stacked Prism Graph</a> %Y A268894 Cf. A003763, A222197, A120443, A268838. %Y A268894 Cf. A003752, A003732. %K A268894 nonn %O A268894 1,2 %A A268894 _Andrew Howroyd_, Feb 15 2016