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 A189616 #7 Jul 22 2025 11:50:59 %S A189616 114,12996,526418,15915001,636683482,28823835852,1256763617551, %T A189616 52939317116118,2243913970341972,96114581661833896, %U A189616 4121472431976051699,176378174243580691358,7545272457917436835785,322957852724963531996423 %N A189616 Number of nX8 binary arrays without the pattern 0 1 0 diagonally, antidiagonally or horizontally. %C A189616 Column 8 of A189617 %H A189616 R. H. Hardin, <a href="/A189616/b189616.txt">Table of n, a(n) for n = 1..200</a> %e A189616 Some solutions for 3X8 %e A189616 ..0..0..0..0..0..1..1..0....0..0..1..1..1..0..0..0....0..0..0..0..1..1..1..1 %e A189616 ..0..0..0..0..1..1..0..1....1..0..1..1..0..0..0..1....1..1..0..0..1..1..0..1 %e A189616 ..0..1..1..0..0..1..1..1....0..0..1..1..0..0..1..1....1..1..1..1..0..1..1..0 %K A189616 nonn %O A189616 1,1 %A A189616 _R. H. Hardin_ Apr 24 2011