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A251494
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Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock summing to 4 5 6 7 or 8
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1
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27844, 3361296, 411510096, 50511532876, 6203258853660, 761894242946484, 93579182156013156, 11493861583850016184, 1411734955462282813836, 173396563123949710511328, 21297460801008604080730372
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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 52 (see link above)
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EXAMPLE
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Some solutions for n=1
..3..2..0..3....3..2..0..3....2..0..1..3....2..1..0..1....2..2..1..0
..2..1..2..1....1..1..1..0....0..3..2..1....3..2..2..1....0..3..2..2
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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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