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A295273
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Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 4 1s.
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2
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44, 865, 19997, 449827, 10203847, 230659662, 5221177246, 118139247475, 2673342943199, 60493860184777, 1368887903616187, 30975935104352291, 700940389558441876, 15861259863124103232, 358917220084448007191
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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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FORMULA
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Empirical recurrence of order 78 (see link above)
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EXAMPLE
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Some solutions for n=3
..0..1..0..0..0..0....1..0..1..1..0..0....1..0..0..0..1..1....0..1..0..1..0..0
..0..0..1..1..0..0....0..0..0..0..0..1....0..0..0..1..0..0....1..1..1..0..0..1
..0..1..0..0..1..0....0..1..1..0..0..1....0..0..0..0..1..1....0..1..0..1..1..0
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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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