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A219210 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 n X n array 0

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

%S 3,3,37,493,19307,1401275,225464479,85975478510

%N Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 n X n array

%C Diagonal of A219217

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 14 2012

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Last modified July 25 20:05 EDT 2024. Contains 374612 sequences. (Running on oeis4.)