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A269108
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Number of n X 7 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three no more than once.
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1
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8748, 8787660, 6482020140, 4227147007836, 2579398703502996, 1509593256271433868, 858502190008810133292, 478110059855042497842996, 262048541877700400412558012, 141832398849461215193264315676
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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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FORMULA
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Empirical recurrence of order 64 (see link above).
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EXAMPLE
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Some solutions for n=1
..2..1..0..2..2..2..0. .0..1..1..2..3..1..3. .3..3..1..3..0..0..2
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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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