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A233788
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Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11
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1
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2856, 19396, 125976, 966892, 6892448, 58623880, 443965172, 4064000052, 31925115348, 306087278904, 2454080129016, 24176541741092, 195967141075428, 1960732403749404, 15985700459500860, 161362564368374036
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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=3
..0..2..2..0..2....2..1..2..0..2....2..0..0..0..0....1..1..1..3..3
..0..1..0..1..2....0..2..0..1..2....0..1..2..1..2....3..2..3..2..1
..2..2..2..2..0....2..1..2..0..2....0..2..0..2..0....3..1..1..3..1
..1..0..1..0..1....3..3..1..2..1....2..1..0..1..0....2..3..2..3..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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