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 A220210 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 7Xn array 0

%I #3 Dec 07 2012 07:10:53

%S 84,1168,58288,2089805,89707755,3725275252

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

%C Row 7 of A220204

%e Some solutions for n=3

%e ..1..1..1....1..0..0....1..0..0....1..1..1....0..0..0....1..0..0....1..0..0

%e ..2..1..1....2..1..0....1..0..0....2..1..1....0..0..0....0..0..0....1..0..0

%e ..2..1..1....2..2..2....1..1..0....2..2..2....1..0..0....0..0..0....2..2..0

%e ..1..0..0....1..1..2....2..2..2....2..2..3....1..0..0....0..0..0....2..1..1

%e ..1..0..0....1..1..1....0..0..0....2..2..3....1..0..0....2..0..0....2..1..1

%e ..1..1..0....3..1..1....0..0..0....2..0..0....3..2..0....3..2..0....3..1..1

%e ..2..1..1....3..3..3....1..0..0....3..0..0....3..2..2....3..3..2....3..2..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 07 2012

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Last modified May 24 16:32 EDT 2024. Contains 372781 sequences. (Running on oeis4.)