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A197647
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Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4
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1
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1, 595, 49381, 2579814, 132750533, 8248011722, 520354155777, 31036479268872, 1833924613834652, 110108685283374089, 6627651690554026076, 397036343653590941942, 23779305335775072682285, 1426718261217475342798545
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OFFSET
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1,2
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COMMENTS
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Every 0 is next to 0 4's, every 1 is next to 1 2's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 2's
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LINKS
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EXAMPLE
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Some solutions containing all values 0 to 4 for n=4
..0..0..0..0..2..2..2....0..0..3..0..2..2..2....0..0..0..1..2..2..2
..0..3..0..0..2..4..2....0..3..0..1..2..4..2....0..0..3..0..2..4..2
..2..2..0..1..2..2..2....0..3..0..1..2..2..2....2..2..1..1..2..2..2
..2..2..0..0..1..0..0....0..0..0..0..1..0..1....2..2..1..0..0..1..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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