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Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..1 introduced in row major order
1

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

%S 785920,79391891,8084022743,820342090696,83226275730613,

%T 8445646803772751,857047765548288466,86969981709764397873,

%U 8825400542834952782544,895570902640916014256212,90879395582208018048154556

%N Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..1 introduced in row major order

%C Column 5 of A205264

%H R. H. Hardin, <a href="/A205261/b205261.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 24 2012