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A251297
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Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9
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1
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67204, 1221748, 24846540, 579830068, 15595789732, 475709341972, 15983177343168, 574357430022192, 21570855922182588, 833318578006296572, 32774523853539209184, 1303789288402465686964, 52243908745934340568048
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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..3..0..1..2..2....3..2..1..3..0..3....1..3..2..3..0..0....1..2..1..3..0..0
..3..3..3..2..1..1....1..3..3..2..1..2....2..0..1..3..0..3....2..1..2..0..3..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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