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A300603
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Number of nX6 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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1, 42, 89, 394, 2394, 16629, 110249, 729292, 4931949, 33688331, 227576010, 1542214484, 10470390642, 71030350954, 481810503725, 3269006885450, 22179699829029, 150481131390602, 1020964668122599, 6926992861786559
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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..1..0. .0..1..1..0..0..1. .0..0..0..1..0..0. .0..0..0..0..0..1
..0..1..0..1..0..0. .1..0..1..0..1..1. .0..1..0..0..1..0. .0..1..1..0..1..1
..1..1..1..0..1..1. .1..1..0..1..0..0. .1..1..1..0..0..0. .1..1..1..0..1..0
..0..0..0..1..1..0. .1..0..0..1..0..0. .0..0..1..1..1..1. .1..0..1..0..1..1
..0..1..0..0..0..0. .1..1..1..0..0..1. .0..0..1..0..1..0. .1..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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