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A184754
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Half the number of n X n binary arrays with no 1 having an adjacent 1 both above and to its left
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1
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1, 7, 163, 12397, 3110914, 2568513843, 6982256142285, 62483420093901107, 1840782554883258104105, 178527915853668578288219231, 57000185549334885919706636039360, 59911857895558455825087768017439269698
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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
..1..1..0....1..1..1....1..1..0....1..0..1....1..0..1....0..0..1....0..1..1
..0..1..0....1..0..1....0..1..1....1..1..0....1..0..1....0..0..0....1..0..1
..0..1..0....1..1..0....1..0..0....0..0..0....1..0..0....1..1..0....0..0..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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