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A298144
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Number of nX6 0..1 arrays with every element equal to 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
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1
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0, 5, 6, 27, 57, 92, 161, 369, 918, 2023, 4177, 9191, 20759, 46792, 104465, 235137, 529925, 1193122, 2683847, 6045698, 13629713, 30735537, 69313806, 156362148, 352814464, 796207260, 1796997548, 4056249123, 9156943844, 20673527694
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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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FORMULA
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Empirical recurrence of order 99 (see link above)
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EXAMPLE
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Some solutions for n=7
..0..0..1..0..1..1. .0..0..1..0..1..1. .0..0..1..1..1..1. .0..0..1..0..0..0
..0..1..1..0..0..1. .0..1..0..1..0..1. .0..1..1..0..0..1. .0..1..0..1..0..1
..1..0..0..1..1..0. .0..1..0..1..0..0. .1..0..0..0..1..0. .1..1..0..1..1..1
..0..1..1..0..0..1. .0..1..0..1..1..0. .0..1..1..1..1..0. .0..1..0..1..0..1
..1..0..0..1..1..0. .0..1..0..0..0..1. .0..1..0..0..0..1. .0..0..0..1..0..0
..0..1..1..0..0..1. .1..0..1..1..1..0. .0..1..0..1..1..0. .0..1..0..1..0..1
..0..0..1..0..1..1. .1..1..0..0..0..0. .0..0..1..1..0..0. .1..1..1..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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