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A252405
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Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7
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1
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4582, 5060, 18377, 63428, 267113, 1068295, 3896844, 16806104, 68150374, 253409613, 1108339723, 4544602468, 17078079134, 75288883908, 310760322629, 1174707449748, 5201551650607, 21547585089641, 81713181388627
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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
..2..3..2..2..0..2..2..0....0..2..2..3..2..2..3..2....3..1..0..3..1..3..3..1
..3..3..1..3..3..1..3..3....2..3..2..2..3..2..2..3....2..2..3..2..2..3..2..2
..0..2..2..0..2..2..3..2....3..0..1..3..0..1..3..0....3..2..2..3..2..2..3..2
..2..3..2..2..3..2..2..3....3..2..2..3..2..2..3..2....3..1..3..3..1..3..3..1
..3..3..1..3..3..1..3..3....2..3..2..2..3..2..2..3....2..2..0..2..2..3..2..2
..0..2..2..3..2..2..0..2....3..3..1..0..3..1..3..0....3..2..2..3..2..2..3..2
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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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