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A251324
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Number of (n+1) X (6+1) 0..1 arrays with every 2 X 2 subblock having one or two 1's.
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1
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1740, 34288, 636404, 12770802, 246926340, 4911447738, 96040080726, 1900083059348, 37310824370952, 736337217038262, 14484078395069690, 285531655916253834, 5620706345762154584, 110750007369029752518
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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 71 (see link above).
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EXAMPLE
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Some solutions for n=2
..1..0..1..0..1..0..1....1..0..0..0..1..0..1....0..1..0..0..0..0..0
..1..0..1..0..1..0..0....0..0..1..0..0..1..0....0..1..0..1..1..1..1
..1..0..0..0..0..1..1....1..1..0..1..1..0..0....0..1..0..0..0..0..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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