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Number of horizontal, vertical and diagonal neighbor colorings of the odd squares of an nX7 array with new integer colors introduced in row major order
0

%I #3 Aug 30 2012 05:43:33

%S 2,136,7050,5219070,1355988481,4761748786964

%N Number of horizontal, vertical and diagonal neighbor colorings of the odd squares of an nX7 array with new integer colors introduced in row major order

%C Column 7 of A216031

%e Some solutions for n=4

%e ..x..0..x..1..x..2..x....x..0..x..1..x..2..x....x..0..x..1..x..2..x

%e ..0..x..1..x..3..x..4....0..x..1..x..3..x..4....0..x..1..x..0..x..3

%e ..x..2..x..5..x..4..x....x..2..x..0..x..5..x....x..2..x..4..x..5..x

%e ..2..x..3..x..0..x..3....2..x..3..x..6..x..0....6..x..5..x..7..x..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Aug 30 2012