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A281163
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Number of nX6 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
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1
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0, 346, 17806, 136138, 865821, 4716420, 22796763, 102696802, 438513869, 1799338352, 7158291149, 27787053444, 105726471706, 395690330122, 1460576127556, 5328417840400, 19243721441580, 68891667482710
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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..1..1..1..0..0. .0..1..0..0..0..1. .0..0..0..0..0..1. .0..1..1..1..0..1
..0..1..0..0..1..1. .0..1..1..1..0..0. .1..1..1..0..1..0. .0..0..0..1..1..0
..0..0..1..1..0..0. .0..1..0..0..0..1. .0..1..0..0..0..1. .1..1..1..1..0..1
..1..0..0..1..1..0. .0..0..1..1..1..1. .1..0..1..1..1..1. .0..0..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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