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Number of n X 7 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 n X 7 array.

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`%I #5 Apr 17 2022 22:16:34
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`%S 84,2748,811802,174413126,28236528076,3886911446418
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`%N Number of n X 7 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 n X 7 array.
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`%C Column 7 of A219373.
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`%e Some solutions for n=3
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`%e ..0..0..0..1..1..1..2....0..0..0..1..1..1..3....0..0..0..0..3..3..3
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`%e ..0..0..0..0..1..1..2....0..0..1..1..1..2..1....0..0..0..2..0..0..1
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`%e ..0..2..0..1..1..1..2....0..0..0..3..3..1..1....0..2..2..0..0..0..0
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`%Y Cf. A219373.
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`%K nonn
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`%O 1,1
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`%A _R. H. Hardin_, Nov 19 2012
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