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 A188877 #7 Jul 22 2025 11:27:04 %S A188877 32,1024,13045,252932,4805140,84965120,1558668181,28472229080, %T A188877 517776315573,9442392487092,172104527985533,3136183930249272, %U A188877 57160501361811036,1041761230924349515,18986128724688300231 %N A188877 Number of 5Xn binary arrays without the pattern 0 0 0 antidiagonally or horizontally. %C A188877 Row 5 of A188874 %H A188877 R. H. Hardin, <a href="/A188877/b188877.txt">Table of n, a(n) for n = 1..200</a> %e A188877 Some solutions for 5X3 %e A188877 ..0..0..1....1..0..0....1..1..1....0..0..1....0..1..1....1..0..1....0..1..1 %e A188877 ..0..1..0....0..1..0....1..0..1....1..0..0....1..1..1....1..0..1....1..1..0 %e A188877 ..1..0..1....0..1..1....1..1..1....0..1..1....1..1..1....1..0..0....0..0..1 %e A188877 ..1..0..1....0..1..0....1..0..0....1..0..1....1..0..0....1..1..0....1..0..0 %e A188877 ..1..1..0....1..0..1....0..1..1....0..0..1....0..1..1....0..1..1....1..0..1 %K A188877 nonn %O A188877 1,1 %A A188877 _R. H. Hardin_ Apr 12 2011