|
%I #5 Mar 31 2012 12:37:12
%S 22346,190577,1839784,17859249,175401820,1731487818,17082121522,
%T 168628106667,1665612205466,16445751889018,162395951972507,
%U 1603938628358880,15838780210261248,156409302430720501
%N Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..1 introduced in row major order
%C Column 5 of A206659
%H R. H. Hardin, <a href="/A206656/b206656.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..1..0..0..0..1..1....0..0..0..1..1..0..0....0..1..1..0..0..1..0
%e ..0..0..0..0..1..1..0....0..1..0..1..1..1..1....1..0..1..0..1..1..1
%e ..1..1..1..0..1..1..1....1..0..0..1..0..0..1....0..0..0..0..0..1..0
%e ..0..0..1..0..1..0..0....0..1..0..1..1..0..1....1..0..1..1..1..1..0
%e ..1..0..1..0..0..0..0....1..1..1..1..1..0..0....1..0..1..0..1..1..1
%e ..0..0..1..1..1..1..1....0..1..0..0..1..1..1....0..0..1..0..0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 11 2012
| 