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A237540
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Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
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1
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1888, 25280, 344128, 4672896, 63456608, 862467040, 11715351424, 159023453952, 2159737999232, 29352841877120, 398714501823488, 5412158969910144, 73503840800214272, 998985586501116032, 13569728204514266112
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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: a(n) = 33284*a(n-4) +25223312*a(n-8) +9872851088*a(n-12) +1714176739904*a(n-16) +117040615631104*a(n-20) -15333075217254400*a(n-24) +298524650406981632*a(n-28) -1514873805416611840*a(n-32) -6055029689993396224*a(n-36) +62325077822438113280*a(n-40) -94646495250940428288*a(n-44) +39539525251177119744*a(n-48) for n>50
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EXAMPLE
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Some solutions for n=2
..1..3..1....3..2..3....1..0..2....1..1..1....2..2..1....2..0..2....2..3..0
..3..0..0....2..1..3....1..1..3....2..3..1....3..3..3....2..3..3....3..3..2
..1..2..3....0..0..0....3..3..2....2..3..2....1..0..2....0..3..2....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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