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A233990
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Number of (n+1)X(1+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18
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1
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164, 774, 3496, 17156, 81200, 409848, 1995424, 10261264, 50945472, 264997984, 1333409408, 6980548160, 35444523776, 186152208256, 951061641728, 5001337944320, 25661802421248, 134974683653632, 694675975022592
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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=5
..3..5....4..6....2..5....0..5....2..0....1..4....0..3....2..1....3..0....5..0
..0..0....1..1....6..1....5..2....6..2....5..0....5..0....5..6....6..3....3..0
..0..6....0..6....1..0....1..6....2..0....0..3....3..0....2..1....6..1....0..5
..2..2....1..1....6..1....4..1....5..5....3..6....3..6....6..5....2..5....5..2
..6..0....0..6....1..4....6..1....6..0....0..3....0..3....0..5....5..0....1..6
..4..4....3..3....5..0....3..6....3..3....5..0....6..3....5..2....4..1....5..2
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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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