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A189428
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Number of n X n array permutations with each element not moving, or moving one space N, SW or SE
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0
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 3X3
..0..4..2....0..1..2....0..1..2....0..1..2....0..1..5....0..4..5....3..1..2
..3..7..1....3..4..5....6..7..5....3..7..8....3..2..8....3..2..1....6..0..5
..6..5..8....6..7..8....4..3..8....6..5..4....6..7..4....6..7..8....4..7..8
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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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