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 A188611 #7 Jul 22 2025 11:17:48 %S A188611 33,1089,12529,123984,1238275,11895711,111888105,1031943536, %T A188611 9407890147,84950474167,762470003816,6810903926077,60646815176663, %U A188611 538699427641981,4776954069762764,42305643108479831,374327321302395882 %N A188611 Number of 6Xn binary arrays without the pattern 1 1 0 diagonally, vertically, antidiagonally or horizontally. %C A188611 Row 6 of A188607 %H A188611 R. H. Hardin, <a href="/A188611/b188611.txt">Table of n, a(n) for n = 1..200</a> %e A188611 Some solutions for 6X3 %e A188611 ..0..1..0....0..1..1....0..0..1....1..0..0....0..0..0....0..1..0....0..1..1 %e A188611 ..1..0..1....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....1..0..0 %e A188611 ..0..1..0....0..0..0....0..1..1....0..0..1....1..0..1....0..0..0....0..0..0 %e A188611 ..1..0..1....0..0..0....0..0..0....0..0..0....1..1..1....0..0..0....0..0..1 %e A188611 ..0..0..1....1..0..1....0..0..1....1..0..0....1..0..1....1..0..0....0..0..1 %e A188611 ..1..0..1....0..0..0....0..0..1....0..0..1....1..1..1....1..0..1....0..1..1 %K A188611 nonn %O A188611 1,1 %A A188611 _R. H. Hardin_ Apr 05 2011