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 A226376 #8 Sep 05 2021 22:00:18 %S A226376 1,0,1,1,13,4,98,57,511,499,3722,3845,24823,31696,164781,243930, %T A226376 1134938,1847197,7765162,13890389,53540736,102899049,371688482, %U A226376 756873240,2587867543,5533483651,18092417136,40238855115,126887317089,291501063966,892138812087 %N A226376 Number of tilings of a 12 X n rectangle using integer-sided square tiles of area > 1. %H A226376 Alois P. Heinz, <a href="/A226376/b226376.txt">Table of n, a(n) for n = 0..1000</a> %e A226376 a(5) = 4: %e A226376 ._._._._._. ._._._._._. ._._._._._. ._._._._._. %e A226376 | | | | | | | | | | | | %e A226376 |___| | | |___| |___| | | |___| %e A226376 | |_____| |_____| | | |_____| |_____| | %e A226376 |___| | | |___| |___| | | |___| %e A226376 | | | | | | | | | | | | %e A226376 |___|_____| |_____|___| |___|_____| |_____|___| %e A226376 | | | | | | | | | | | | %e A226376 |___| | | |___| | |___| |___| | %e A226376 | |_____| |_____| | |_____| | | |_____| %e A226376 |___| | | |___| | |___| |___| | %e A226376 | | | | | | | | | | | | %e A226376 |___|_____| |_____|___| |_____|___| |___|_____| %Y A226376 Column k=12 of A226206. %K A226376 nonn %O A226376 0,5 %A A226376 _Alois P. Heinz_, Jun 05 2013