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A236030
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Number of (n+1) X (3+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2 X 2 subblock.
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1
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1848, 14980, 116786, 965344, 8289258, 68613596, 570818506, 4747089488, 39848021722, 330427763000, 2767283162570, 22979305037276, 192512468335056, 1597892870968064, 13385558626977130, 111129970428464292
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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 92 (see link above).
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EXAMPLE
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Some solutions for n=3
..0..1..2..2....1..0..1..0....0..0..1..0....0..0..1..0....2..1..2..0
..0..0..2..1....0..1..2..2....1..0..2..1....0..2..2..1....0..0..1..2
..1..2..2..1....2..1..2..1....0..2..0..2....0..2..0..2....0..0..1..0
..0..1..0..1....2..1..1..2....2..2..1..1....1..1..0..0....2..2..1..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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