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A233229
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Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order
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1
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2136, 9757236, 59679029456, 366805442634477, 2262465262533395122, 13966565723905519312347, 86240738075580821512843673, 532562944711463255634918419168, 3288824486303682666484477919564597
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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=2
..0..0..1..5..1..1..5....0..0..0..1..5..2..2....0..0..0..0..0..1..2
..0..0..2..1..5..1..2....0..0..3..3..1..2..2....0..0..4..4..0..0..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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