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A297922
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Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 4 king-move adjacent elements, with upper left element zero.
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1
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8, 2907, 103558, 3211086, 109611795, 3751364813, 127727388127, 4359449485941, 148831641978201, 5080192954401926, 173423354418027819, 5920411674618383958, 202112732485637675954, 6899798870394720781555, 235548707335372098280494
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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=3
..0..0..0..0..1..0..1. .0..0..0..1..1..0..1. .0..1..0..0..0..1..0
..0..1..0..0..0..1..0. .0..1..0..1..0..0..1. .0..1..1..0..1..1..0
..0..1..1..1..1..0..1. .1..0..0..1..0..1..0. .1..0..1..1..1..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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