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A231047
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Number of nX6 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero
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1
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0, 428, 5100, 310804, 10631552, 448752816, 17477913984, 702369644524, 27889180833188, 1112507026382520, 44300516313730388, 1765247886383707868, 70322056553003374268, 2801688699959758846796, 111617418686821238798432
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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 93 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..1..2..3..2..3....0..1..2..1..0..1....0..3..2..3..2..3....0..1..2..1..0..1
..0..3..2..3..0..1....0..3..0..3..2..3....0..1..0..1..0..1....0..3..2..1..2..3
..0..3..0..1..2..1....2..3..0..3..2..3....0..1..0..3..2..3....2..3..0..3..0..3
..0..1..2..1..0..3....2..1..0..3..0..1....2..3..2..1..0..1....2..1..2..1..2..3
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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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