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 A237390 #5 Jul 23 2025 10:08:59 %S A237390 366568,10406596,306543648,9678405410,312459028946,10132738026198, %T A237390 327566510834706,10602029347323732,343125940257145882 %N A237390 Number of (n+1)X(6+1) 0..2 arrays colored with the maximum plus the upper median minus the minimum of every 2X2 subblock. %C A237390 Column 6 of A237391 %e A237390 Some solutions for n=1 %e A237390 ..0..2..0..1..2..2..1....0..1..2..2..1..0..2....0..0..1..1..2..0..1 %e A237390 ..2..0..1..0..0..0..1....1..0..1..0..1..1..1....0..0..1..1..0..2..1 %K A237390 nonn %O A237390 1,1 %A A237390 _R. H. Hardin_, Feb 07 2014