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A225019
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Number of (n+1)X(n+1) 0..2 matrices with each 2X2 permanent equal
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1
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81, 1935, 117959, 68599847, 61256508583, 377600972329977, 3848918646053092273, 232902549373982083370091, 26631802795042217377560514459, 15822211869785345098476275119070159
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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=2
..0..2..0....1..1..1....0..2..0....0..0..0....2..0..0....2..1..1....1..1..2
..0..0..0....0..1..0....2..0..2....0..0..0....0..0..0....0..1..1....0..0..0
..1..2..1....1..1..1....0..2..2....0..2..1....2..2..2....2..2..0....0..0..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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