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A237951
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T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus 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, 1460, 1460, 8291, 12218, 8291, 50268, 102396, 102396, 50268, 303996, 945688, 1268436, 945688, 303996, 1843152, 8557942, 17612024, 17612024, 8557942, 1843152, 11184876, 78337964, 235951750, 386513430, 235951750, 78337964, 11184876
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OFFSET
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1,1
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COMMENTS
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Table starts
........256........1460.........8291.........50268........303996.......1843152
.......1460.......12218.......102396........945688.......8557942......78337964
.......8291......102396......1268436......17612024.....235951750....3242667656
......50268......945688.....17612024.....386513430....7955118248..171966060604
.....303996.....8557942....235951750....7955118248..245793254004.8132627354852
....1843152....78337964...3242667656..171966060604.8132627354852
...11184876...716030830..44334957288.3650074854108
...68097912..6626058730.616683845628
..414486896.60902085946
.2520029560
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LINKS
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FORMULA
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Empirical for column k:
k=1: [linear recurrence of order 46]
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EXAMPLE
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Some solutions for n=2 k=4
..0..2..0..2..1....0..2..3..1..2....0..2..0..3..2....0..0..1..1..2
..1..2..0..3..0....2..3..0..3..1....2..2..3..0..2....2..3..0..3..0
..0..3..0..3..1....3..1..3..0..1....3..0..3..1..3....1..1..1..2..2
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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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