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 A184463 #7 Jul 22 2025 09:34:43 %S A184463 334,12324,616534,33787978,1925704384,112210745828,6636592203096, %T A184463 396770571117114,23916105558978568,1450886078150900726, %U A184463 88476176169893590874,5418407297450835597284,333018547198651616447064 %N A184463 Half the number of (n+1)X6 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks. %C A184463 Column 5 of A184467 %H A184463 R. H. Hardin, <a href="/A184463/b184463.txt">Table of n, a(n) for n = 1..75</a> %e A184463 Some solutions for 3X6 %e A184463 ..0..1..0..0..0..1....0..1..1..1..1..1....0..0..1..1..1..0....0..1..1..0..1..0 %e A184463 ..0..0..1..1..0..1....1..1..0..0..0..0....1..1..0..0..0..1....0..1..1..0..0..0 %e A184463 ..0..1..1..1..1..0....1..1..0..0..1..0....1..1..0..0..1..1....1..0..1..1..1..0 %e A184463 ... %e A184463 ...M..E..E..M..E.......P..P..E..E..E.......E..E..E..E..E.......E..P..E..M..M... %e A184463 ...M..P..P..P..E.......P..E..M..M..M.......P..E..M..M..P.......E..P..P..E..M... %K A184463 nonn %O A184463 1,1 %A A184463 _R. H. Hardin_ Jan 15 2011