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 A237329 #6 Jul 23 2025 10:05:28 %S A237329 20692,242644,2870224,36921568,449909120,5467718444,67160833084, %T A237329 873971263352,10725570823166,130884937973764,1618592687351532, %U A237329 21304964466254580,262963526810931008,3219057124873502360 %N A237329 Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one. %C A237329 Column 5 of A237332 %H A237329 R. H. Hardin, <a href="/A237329/b237329.txt">Table of n, a(n) for n = 1..152</a> %e A237329 Some solutions for n=1 %e A237329 ..2..1..2..0..2..0....2..2..0..2..1..1....2..1..2..2..0..1....1..1..2..0..0..0 %e A237329 ..2..1..1..1..2..0....0..1..1..0..1..2....2..0..1..2..2..2....0..0..0..0..1..1 %K A237329 nonn %O A237329 1,1 %A A237329 _R. H. Hardin_, Feb 06 2014