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A237791
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T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
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6
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256, 1902, 1902, 14369, 26230, 14369, 108626, 367726, 367726, 108626, 822482, 5195344, 9679862, 5195344, 822482, 6206506, 73170922, 256311790, 256311790, 73170922, 6206506, 46951577, 1029281994, 6776019974, 12795841200, 6776019974
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OFFSET
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1,1
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COMMENTS
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Table starts
.........256...........1902.............14369..............108626
........1902..........26230............367726.............5195344
.......14369.........367726...........9679862...........256311790
......108626........5195344.........256311790.........12795841200
......822482.......73170922........6776019974........635807130472
.....6206506.....1029281994......178512761384......31548627779530
....46951577....14489762434.....4719215160352....1566949786889880
...354492388...204068007444...124491992110564...77875021827170574
..2682430004..2873241939356..3291189351446428.3868675262695142732
.20249512232.40449727138522.86781113390907628
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LINKS
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FORMULA
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Empirical for column k:
k=1: [linear recurrence of order 30]
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EXAMPLE
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Some solutions for n=2 k=4
..0..0..2..2..3....0..2..2..0..0....0..2..2..2..1....0..2..0..2..0
..0..1..3..2..1....2..1..1..2..0....2..1..3..3..2....1..3..2..2..1
..1..3..1..2..0....1..1..3..3..0....0..3..1..0..0....1..1..0..1..1
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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