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A251342
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Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3
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1
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2190625, 99776859, 6775415354, 687109914883, 91970680872031, 14450351430729220, 2476540453681100993, 444899690539687485323, 81997849049595954137818, 15325729998270029389138691
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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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EXAMPLE
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Some solutions for n=1
..0..0..0..3..2..2..2..3....0..2..0..2..1..2..0..2....0..0..0..2..3..2..0..0
..0..3..0..3..1..1..1..0....3..1..3..1..2..1..3..1....0..3..0..1..3..1..0..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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