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A205230
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Number of (n+1)X4 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero
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1
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1187, 27157, 640652, 12273323, 221519116, 3408343704, 48815088704, 628179958745, 7601482985625, 85461685481592, 913975093055739, 9268873184287274, 90266141973458345, 844362225976352539
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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..1..1..1....2..2..1..1....1..1..1..2....0..1..0..2....0..1..2..2
..2..0..2..2....2..0..2..2....0..1..2..2....2..2..2..1....1..1..1..2
..0..1..1..1....1..2..2..1....1..1..1..2....0..2..0..1....0..1..2..2
..2..1..2..0....1..2..1..2....2..1..2..2....2..2..2..1....2..2..0..1
..0..1..1..2....1..2..2..1....2..1..1..0....2..2..2..0....0..2..2..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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