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A263220
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Number of (n+1)X(4+1) 0..2 arrays with each row and column divisible by 5, read as a base-3 number with top and left being the most significant digits.
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1
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7, 343, 12601, 475539, 22342751, 1094138875, 53375395657, 2607171566653, 127682197727311, 6256406902789159, 306545703110117209, 15020102223676251147, 735979598601461106119, 36062999023016301797227
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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 89 (see link above)
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EXAMPLE
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Some solutions for n=3
..1..0..2..0..1....2..2..2..0..1....0..1..0..1..0....2..0..2..0..0
..1..2..2..2..1....0..0..0..1..2....1..2..2..0..2....0..1..0..1..0
..1..2..1..0..1....0..2..0..0..1....2..1..0..2..0....2..2..2..0..1
..1..1..0..2..1....1..0..1..1..2....0..2..2..2..2....0..0..0..1..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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