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Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX4 array
1

%I #4 Nov 26 2012 05:32:54

%S 20,125,1751,23506,245205,2326019,21036433,180509639,1458287494,

%T 11082376729,79456239834,539674743558,3488011587815,21545098178172,

%U 127698505774282,728875173290252,4019100286657877,21469186347860585

%N Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX4 array

%C Column 4 of A219714

%H R. H. Hardin, <a href="/A219710/b219710.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 26 2012