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 A239270 #8 Nov 28 2016 01:47:33 %S A239270 1,1,171,4945,331133,17508475,1017093992,57228320561,3263262629905, %T A239270 185175369431551,10529540995776143,598275977865042347, %U A239270 34004634498887815603,1932504421503220832048,109831420296006021851427,6242000703148139096486777,354752087455830720672222391 %N A239270 Number of domicule tilings of an 8 X n grid. %C A239270 A domicule is either a domino or it is formed by the union of two neighboring unit squares connected via their corners. In a tiling the connections of two domicules are allowed to cross each other. %H A239270 Alois P. Heinz, <a href="/A239270/b239270.txt">Table of n, a(n) for n = 0..500</a> %Y A239270 Column k=8 of A239264. %K A239270 nonn %O A239270 0,3 %A A239270 _Alois P. Heinz_, Mar 13 2014