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A263552
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Number of (n+1)X(2+1) 0..4 arrays with each row and column divisible by 7, read as a base-5 number with top and left being the most significant digits.
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1
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10, 123, 2210, 38765, 695964, 12496675, 224917356, 4048173635, 72867144002, 1311601599673, 23608817069520, 424958486053303, 7649252553421318, 137686543396816875, 2478357781214919410, 44610440006778903293
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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 47 (see link above)
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EXAMPLE
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Some solutions for n=4
..4..2..2....4..2..2....2..2..3....4..2..2....3..0..2....0..0..0....4..2..2
..0..4..1....1..4..4....3..3..1....0..4..1....1..4..4....4..3..4....2..4..0
..4..1..0....3..3..1....0..0..0....4..2..2....2..2..3....0..2..4....3..4..3
..3..0..2....0..1..2....1..2..0....0..2..4....1..4..4....3..3..1....2..1..1
..3..3..1....2..4..0....1..3..2....4..3..4....3..4..3....3..1..4....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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