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A239028
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Number of nX6 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of elements above it, modulo 3
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1
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1, 7, 22, 189, 757, 7265, 33699, 339315, 1719471, 17562449, 93885393, 958423704, 5294453737, 53749275243, 303098123295, 3057605672892, 17472132232105, 175268385351709, 1010298392497549, 10088889232010085, 58495304591252863
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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 90 (see link above)
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EXAMPLE
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Some solutions for n=5
..2..0..0..0..0..0....2..0..0..0..0..0....2..0..0..0..0..0....2..0..0..0..0..0
..1..0..0..2..2..0....1..0..0..2..2..0....1..0..0..0..0..0....1..2..2..0..0..0
..2..0..0..1..1..2....2..0..0..1..2..0....2..0..0..0..0..0....2..1..1..2..2..0
..2..0..0..0..0..1....1..2..2..0..0..0....1..2..2..0..0..0....2..0..0..1..2..0
..1..0..0..2..2..0....2..1..2..0..0..0....2..1..1..0..0..2....1..0..0..0..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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