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A219366 Number of n X n 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 n array 0

%I #5 Dec 18 2015 18:18:16

%S 4,13,618,82312,39601472,68107762118

%N Number of n X n 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 n array

%C Diagonal of A219373

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 19 2012

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Last modified August 17 19:53 EDT 2024. Contains 375227 sequences. (Running on oeis4.)