A219348 - OEIS

A219348

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..1 n X n array

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

%S 2,2,8,35,247,2482,39967,1086910,54162362,4835495936

%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..1 n X n array

%C Diagonal of A219354

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 18 2012