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 A341848 #7 Mar 14 2021 18:44:26 %S A341848 1,3,10,84,852,11580,197640,4314240,100855440,3342895920,98070406560, %T A341848 4652556511680,163444377096000,10568979882901440,431650452829115520, %U A341848 36599310178253222400,1702185892636880851200,183500657952824967955200,9569677207227878912371200 %N A341848 Number of maximal matchings in the 3 X n rook graph. %H A341848 Andrew Howroyd, <a href="/A341848/b341848.txt">Table of n, a(n) for n = 0..50</a> %Y A341848 Row n=3 of A341847. %Y A341848 Cf. A341502, A341851. %K A341848 nonn %O A341848 0,2 %A A341848 _Andrew Howroyd_, Feb 21 2021