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 A188702 #7 Jul 22 2025 11:18:58 %S A188702 32,144,1665,11556,103484,813309,6814290,55337580,456131965, %T A188702 3733374889,30657827284,251373054600,2062533960693,16917792861256, %U A188702 138787419681888,1138485405941113,9339379255511170,76613020663877804,628477682370006669 %N A188702 Number of nX5 binary arrays without the pattern 0 0 diagonally or vertically. %C A188702 Column 5 of A188706 %H A188702 R. H. Hardin, <a href="/A188702/b188702.txt">Table of n, a(n) for n = 1..200</a> %F A188702 Empirical: a(n) = a(n-1) +49*a(n-2) +107*a(n-3) -154*a(n-4) -404*a(n-5) +250*a(n-6) +472*a(n-7) -278*a(n-8) -168*a(n-9) +131*a(n-10) -9*a(n-11) -7*a(n-12) +a(n-13) %e A188702 Some solutions for 3X5 %e A188702 ..1..1..1..1..1....0..0..1..0..0....0..1..1..1..0....1..0..0..1..0 %e A188702 ..1..1..1..1..0....1..1..1..1..1....1..1..1..1..1....0..1..1..1..1 %e A188702 ..0..1..1..0..1....0..0..1..0..1....1..1..0..1..0....1..1..0..1..1 %K A188702 nonn %O A188702 1,1 %A A188702 _R. H. Hardin_ Apr 08 2011