A205268 - OEIS

%I #5 Mar 31 2012 12:37:05

%S 11553,288483,7191926,178174596,4422079769,109752541538,2723625483808,

%T 67591734118641,1677414489611378,41628055193741301,

%U 1033075535275093844,25637640330486282732,636244446154359017064,15789557597933547273027

%N Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..1 introduced in row major order

%C Column 3 of A205273

%H R. H. Hardin, <a href="/A205268/b205268.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..0..0..1..1..0....0..0..1..1..0....0..1..1..0..1....0..1..1..0..0

%e ..0..0..1..0..0....0..1..0..1..0....1..0..1..0..0....1..1..0..1..1

%e ..0..1..1..1..0....1..1..1..0..1....1..0..1..1..1....0..1..1..0..1

%e ..0..0..0..1..0....1..1..0..1..0....0..0..1..0..0....1..0..1..1..1

%e ..1..0..0..1..0....1..1..0..1..1....0..0..1..0..1....0..0..0..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 24 2012