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A206105
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Number of (n+1) X 5 0..3 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing, and counterclockwise edge increases nonincreasing, rightwards and downwards.
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1
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95408, 3991540, 210981300, 12793359564, 816173366244, 53034080059688, 3471628061187072, 227967307330878004, 14991259276836539656, 986530392257822314440, 64944365386791244834180, 4276195718541924421388040
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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=4:
..1..0..0..3..3....0..2..3..1..2....3..3..0..1..1....1..0..2..2..1
..1..3..3..3..0....2..2..3..3..3....1..2..3..0..2....0..0..0..2..1
..2..3..0..0..0....3..2..2..2..0....0..1..2..3..3....0..1..0..2..1
..2..3..3..3..0....2..2..1..1..1....2..3..0..2..0....0..0..0..2..2
..2..2..2..2..1....2..1..1..3..2....3..1..2..1..0....1..1..0..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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