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A205411
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Number of (n+2)X6 0..2 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..2 introduced in row major order
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1
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236576, 5686031, 151598017, 2839359056, 67792717447, 1715387177450, 36803297869771, 858554973465776, 20804813475950945, 468182020666807407, 10859505355533459702, 257344051938542231086, 5904014034167014999764
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..0..1..2..0..2..2....0..1..2..2..1..0....0..1..0..2..1..2....0..0..0..1..0..1
..1..2..2..0..0..0....2..0..2..0..2..2....2..1..1..1..1..2....1..2..1..1..1..1
..2..2..2..0..0..1....2..2..2..2..2..2....1..1..1..2..1..2....1..1..1..1..2..2
..2..0..2..2..0..1....2..0..0..0..0..2....0..2..1..2..2..2....1..0..2..1..2..1
..0..0..2..2..0..0....2..2..0..1..1..2....1..0..1..1..1..1....0..0..0..1..1..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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