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 A184682 #7 Jul 22 2025 09:41:06 %S A184682 568,10384,140816,2171152,31817360,476660624,7079094288,105530924944, %T A184682 1570852959248,23397537190544,348412932162320,5188788920597392, %U A184682 77271414617633808,1150747018045489296,17137111768900018448 %N A184682 Number of (n+1)X6 binary arrays with every 2X2 subblock singular. %C A184682 Column 5 of A184686 %H A184682 R. H. Hardin, <a href="/A184682/b184682.txt">Table of n, a(n) for n = 1..200</a> %F A184682 Empirical: a(n)=25*a(n-1)-131*a(n-2)-771*a(n-3)+8180*a(n-4)-11482*a(n-5)-71100*a(n-6)+202352*a(n-7)+125888*a(n-8)-816032*a(n-9)+304768*a(n-10)+951040*a(n-11)-590848*a(n-12)-217088*a(n-13)+98304*a(n-14) %e A184682 Some solutions for 3X6 %e A184682 ..0..0..1..0..0..0....1..1..0..0..0..0....0..1..0..0..0..0....0..0..1..1..1..1 %e A184682 ..1..0..0..0..1..0....1..1..0..1..0..0....0..1..0..0..1..1....1..0..0..0..0..0 %e A184682 ..1..0..1..0..0..0....1..1..0..0..0..1....0..1..0..0..1..1....0..0..0..0..0..1 %K A184682 nonn %O A184682 1,1 %A A184682 _R. H. Hardin_ Jan 19 2011