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A236505
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T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the minimum minus the lower median of every 2X2 subblock
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5
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256, 2632, 2632, 27458, 54110, 27458, 284408, 1116232, 1116232, 284408, 2954930, 23079872, 46503900, 23079872, 2954930, 30642966, 477377520, 1936913190, 1936913190, 477377520, 30642966, 318132117, 9873995570, 81160939773
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OFFSET
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1,1
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COMMENTS
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Table starts
........256.........2632.........27458.........284408........2954930
.......2632........54110.......1116232.......23079872......477377520
......27458......1116232......46503900.....1936913190....81160939773
.....284408.....23079872....1936913190...164671652250.14038040966310
....2954930....477377520...81160939773.14038040966310
...30642966...9873995570.3386470375460
..318132117.204198122306
.3300684904
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LINKS
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FORMULA
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Empirical for column k:
k=1: [linear recurrence of order 34]
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EXAMPLE
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Some solutions for n=2 k=4
..0..0..1..3..1....0..0..1..2..3....0..0..0..2..2....0..0..1..3..3
..0..0..2..1..0....0..0..2..2..2....0..0..1..3..3....0..0..1..2..0
..1..2..2..1..0....0..3..2..0..0....1..1..1..3..2....2..3..2..2..0
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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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