A219470 Number of nX7 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX7 array.
84, 2663, 674954, 157191488, 29873644925, 4758315482104, 664221777830589, 85045859176792827
Offset: 1
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Examples
Some solutions for n=3 ..0..0..0..0..1..2..2....0..0..0..1..1..0..2....0..0..0..0..0..1..3 ..0..0..1..0..2..1..2....0..0..0..0..0..0..0....0..0..0..0..0..2..0 ..0..0..0..0..1..0..0....0..1..3..0..3..0..2....0..1..0..0..0..0..0
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