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A186785
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Number of (n+1)X4 0..3 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants
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1
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2366, 63504, 696596, 17120960, 281080458, 5705992444, 101397910418, 1975255121820, 36536246624156, 698504377421396, 13068876867153840, 247806236334676870, 4660784800342463574, 88125623567615622304
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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 3X4
..0..1..3..1....3..3..1..0....0..3..2..3....0..0..1..3....2..0..0..3
..3..2..3..2....3..3..1..1....0..3..1..2....3..0..1..2....2..3..0..0
..3..1..3..3....3..3..1..2....0..3..0..1....1..0..2..3....0..3..2..1
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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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