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 A341501 #7 Mar 13 2021 16:52:00 %S A341501 1,14,312,13945,1241696,196846257,50828091505,20024754905438, %T A341501 11449549613245851,9132012077055635872,9838890888977921645318, %U A341501 13943876645976749962479951,25420022651057340998037064594,58486800791746378910741227427387 %N A341501 Number of cycles in the 3 X n rook graph. %H A341501 Andrew Howroyd, <a href="/A341501/b341501.txt">Table of n, a(n) for n = 1..30</a> %Y A341501 Column 3 of A286418. %K A341501 nonn %O A341501 1,2 %A A341501 _Andrew Howroyd_, Feb 21 2021