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 A184465 #7 Sep 03 2022 21:26:29 %S A184465 4496,667600,133687638,29202473260,6636592203096,1543735290815166, %T A184465 364710845961492808,87131390011496951676,20992313186787145920488, %U A184465 5091049499273022700839604,1241234020860425300419060324 %N A184465 Half the number of (n+1) X 8 binary arrays with equal numbers of majority one 2 X 2 subblocks and majority zero 2 X 2 subblocks. %C A184465 Column 7 of A184467. %H A184465 R. H. Hardin, <a href="/A184465/b184465.txt">Table of n, a(n) for n = 1..29</a> %e A184465 Some solutions for 3 X 8 %e A184465 ..0..0..0..1..1..1..1..1....0..0..0..1..1..1..1..1....0..0..1..0..1..1..1..1 %e A184465 ..0..0..1..0..1..1..0..1....0..0..0..0..1..1..1..1....1..0..0..1..0..1..1..1 %e A184465 ..1..0..0..0..0..1..1..0....1..0..0..1..0..0..1..0....0..0..1..0..0..1..0..1 %e A184465 ... %e A184465 ...M..M..E..P..P..P..P.......M..M..M..P..P..P..P.......M..M..E..E..P..P..P... %e A184465 ...M..M..M..M..P..P..E.......M..M..M..E..E..P..P.......M..M..E..M..E..P..P... %Y A184465 Cf. A184467. %K A184465 nonn %O A184465 1,1 %A A184465 _R. H. Hardin_, Jan 15 2011