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 A186126 #7 Jul 22 2025 10:15:44 %S A186126 298,5214,34678,350266,2915982,29491822,264173146,2630528360, %T A186126 24515504568,241032804442,2294311413454,22390251063942, %U A186126 215298723003602,2093763781095758,20224956581082238,196384193909326548 %N A186126 Number of (n+1)X8 binary arrays with every 2X2 subblock diagonal sum less antidiagonal sum equal to some horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum. %C A186126 Column 7 of A186128 %H A186126 R. H. Hardin, <a href="/A186126/b186126.txt">Table of n, a(n) for n = 1..82</a> %e A186126 Some solutions for 3X8 %e A186126 ..0..0..1..1..0..1..1..0....1..0..0..0..1..1..0..0....1..0..1..0..1..1..0..0 %e A186126 ..0..0..0..1..1..1..1..1....1..0..0..0..0..1..1..1....0..0..0..0..1..1..1..1 %e A186126 ..1..1..0..1..1..0..0..1....0..0..1..1..0..0..0..0....0..1..0..1..1..0..1..1 %K A186126 nonn %O A186126 1,1 %A A186126 _R. H. Hardin_ Feb 13 2011