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A276247
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Number of nX7 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-2) and new values introduced in order 0..2.
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1
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48, 1944, 9148, 115682, 1423062, 17450554, 219977330, 2780927371, 35144231606, 446083313365, 5668147759489, 72021229704285, 915757509022000, 11646919947937198, 148122094309974829, 1883921138963266109
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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=4
..0..0..1..1..2..0..1. .0..1..1..0..2..1..1. .0..0..1..1..2..0..0
..1..2..0..0..2..2..0. .0..2..2..1..0..0..2. .1..2..0..0..1..2..0
..0..1..2..0..0..1..1. .1..1..0..2..2..0..0. .0..1..2..2..0..1..2
..0..0..1..2..2..0..0. .2..1..1..0..2..2..1. .2..0..0..1..2..0..0
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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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