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 A188610 #7 Jul 22 2025 11:17:41 %S A188610 20,400,3354,24711,181626,1288734,8951764,61078115,412004463, %T A188610 2754584607,18305734529,121093197502,798454543443,5251973517844, %U A188610 34485457416930,226141081539515,1481522016356561,9698977844261838,63462246846069728 %N A188610 Number of 5Xn binary arrays without the pattern 1 1 0 diagonally, vertically, antidiagonally or horizontally. %C A188610 Row 5 of A188607 %H A188610 R. H. Hardin, <a href="/A188610/b188610.txt">Table of n, a(n) for n = 1..200</a> %e A188610 Some solutions for 5X3 %e A188610 ..0..1..1....1..1..1....0..1..1....0..0..1....0..0..0....0..0..0....0..0..0 %e A188610 ..0..0..0....0..0..0....0..0..0....1..0..0....0..0..0....1..0..0....0..0..0 %e A188610 ..0..1..1....0..1..0....1..1..1....0..0..0....0..1..0....0..0..0....0..1..1 %e A188610 ..1..0..0....0..0..0....0..1..0....1..0..0....0..0..0....0..0..0....0..0..0 %e A188610 ..0..0..0....0..0..0....1..1..1....0..1..1....1..1..1....1..1..1....1..0..0 %K A188610 nonn %O A188610 1,1 %A A188610 _R. H. Hardin_ Apr 05 2011