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A240777
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Number of n X n 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order
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0
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1, 3, 20, 305, 10150, 746346, 121621207, 43857418181, 34948902833111, 61568080277621258, 239709187163404332821
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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 n=4
..0..0..1..0....0..1..0..1....0..1..1..0....0..0..1..0....0..1..0..1
..0..0..1..0....0..1..0..1....0..1..1..0....0..0..1..1....1..0..1..0
..0..0..1..1....0..1..1..0....0..0..1..0....0..1..0..1....0..0..1..1
..0..0..1..1....0..1..1..0....0..0..1..0....0..1..0..1....0..0..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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