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A237071
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Number of (n+1)X(3+1) 0..3 arrays with the upper median of every 2X2 subblock equal
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1
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15882, 1046822, 53940782, 3263989086, 195683299844, 12159520038142, 763699683972418, 48556387347813958, 3108197056553191364, 199983470160543029632, 12909164392694493796142, 835179086883786317018674
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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 62 (see link above)
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EXAMPLE
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Some solutions for n=1
..0..1..1..1....3..0..2..0....2..2..0..2....3..2..3..0....2..3..2..1
..1..0..2..1....0..2..0..2....1..2..0..3....3..3..3..0....1..0..2..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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