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A237734 Number of (n+2)X(1+2) 0..1 arrays with the (lower) median of each row and column nondecreasing 1

%I #5 Feb 12 2014 07:35:13

%S 144,790,3720,18284,83776,389862,1747320,7872964,34692768,153039484,

%T 665606032,2892713880,12452328704,53523477382,228514634712,

%U 973914704084,4130296829920,17485093214484,73743666735728,310486705313128

%N Number of (n+2)X(1+2) 0..1 arrays with the (lower) median of each row and column nondecreasing

%C Column 1 of A237738

%H R. H. Hardin, <a href="/A237734/b237734.txt">Table of n, a(n) for n = 1..69</a>

%e Some solutions for n=5

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 12 2014

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Last modified July 18 03:34 EDT 2024. Contains 374377 sequences. (Running on oeis4.)