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A235577
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T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise
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4
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256, 2894, 2894, 28978, 102188, 28978, 268448, 3103656, 3103656, 268448, 2377726, 82875972, 317142694, 82875972, 2377726, 20374112, 2014103692, 28760293894, 28760293894, 2014103692, 20374112, 170668898, 45287503606, 2318212983882
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OFFSET
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1,1
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COMMENTS
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Table starts
........256.........2894...........28978...........268448..........2377726
.......2894.......102188.........3103656.........82875972.......2014103692
......28978......3103656.......317142694......28760293894....2318212983882
.....268448.....82875972.....28760293894....9569624142260.2861670695225974
....2377726...2014103692...2318212983882.2861670695225974
...20374112..45287503606.166487069932858
..170668898.960171131904
.1404828230
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LINKS
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FORMULA
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Empirical for column 1: [linear recurrence of order 17]
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EXAMPLE
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Some solutions for n=2 k=4
..0..0..0..0..3....0..0..0..0..0....0..0..0..0..0....0..0..0..0..3
..1..0..1..1..0....0..1..1..1..1....0..1..0..1..2....0..0..1..0..1
..3..0..3..1..3....0..3..0..1..0....0..2..0..3..3....1..3..2..0..3
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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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