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 A255262 #3 Feb 19 2015 17:40:09 %S A255262 1,32,634,8352,85138,781712,6965108,63676276,573884026,5345916472, %T A255262 49611640680,461953566404,4330354287396,40272872295148, %U A255262 374708736274324,3480925090005388,32298776524667360,300205447716571716,2790072113514722888,25940651276104559604,241231567695925299556 %N A255262 Number of 2-colorings of a 5 X n rectangle such that no nontrivial subsquare has monochromatic corners. %Y A255262 Column k=5 of A255256. %K A255262 nonn %O A255262 0,2 %A A255262 _Alois P. Heinz_, Feb 19 2015