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A251639
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Number of (n+2)X(2+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3
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1
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429399, 29245729, 2000922455, 136454122643, 9309440987703, 635207928799359, 43339294278011643, 2956993750309090701, 201753135616556184199, 13765424797557082160031, 939201967205489895161245
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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=1
..0..1..2..0....0..0..0..1....0..1..2..2....0..1..2..0....0..1..1..1
..1..1..2..1....2..2..2..2....2..2..0..2....2..2..0..1....2..1..1..1
..1..0..1..0....2..2..1..1....2..0..2..1....1..1..0..0....0..1..1..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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