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A301328
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Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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1, 42, 89, 414, 2520, 17491, 116017, 770874, 5227338, 35859578, 243392668, 1656906035, 11300552599, 77029689648, 524999643412, 3578949443472, 24398749189795, 166327879820588, 1133876177288994, 7729856688334830
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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=5
..0..0..1..1..0..0. .0..1..1..0..0..1. .0..0..1..1..0..0. .0..0..1..0..0..1
..0..1..1..0..1..0. .1..0..1..0..1..1. .0..1..1..1..0..1. .0..0..0..1..0..0
..1..0..0..1..1..0. .1..1..1..0..0..1. .0..0..1..0..1..1. .1..1..1..1..0..1
..1..0..1..0..1..0. .0..0..1..0..1..0. .0..1..0..0..0..1. .1..0..0..1..0..0
..1..1..1..1..0..0. .0..1..1..1..0..0. .1..1..0..0..1..1. .0..0..1..1..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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