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 A287053 #9 Feb 16 2025 08:33:46 %S A287053 1,55,87362,54003765,43402320448,32567565264292,24976513162427653, %T A287053 19056798015394695543,14569902220123180849570, %U A287053 11135886394033736561250816,8513244230416326065909810345,6508281831123403112229534915956,4975689584055269435866523080540937 %N A287053 Number of perfect matchings in the graph P_2 X P_9 X P_n. %H A287053 Alois P. Heinz, <a href="/A287053/b287053.txt">Table of n, a(n) for n = 0..120</a> %H A287053 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PerfectMatching.html">Perfect Matching</a> %H A287053 Wikipedia, <a href="https://en.wikipedia.org/wiki/Matching_(graph_theory)">Matching (graph theory)</a> %Y A287053 Column k=9 of A181206. %K A287053 nonn %O A287053 0,2 %A A287053 _Alois P. Heinz_, May 18 2017