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Number of (n+2)X9 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 44989988,16618559061,6206887994602,2306771728514169,

%T 857047765548288466,318538318082592159576,118390237532638666425606,

%U 44000626228588774560866297,16353210105219251396525765791

%N Number of (n+2)X9 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 7 of A205264

%H R. H. Hardin, <a href="/A205263/b205263.txt">Table of n, a(n) for n = 1..137</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 24 2012