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A237735 Number of (n+2) X (2+2) 0..1 arrays with the (lower) median of each row and column nondecreasing. 1

%I

%S 790,13259,105639,1707200,13980344,219064013,1853523145,28043965682,

%T 244945512750,3576754641447,32147201401103,454105760467216,

%U 4184801089025920,57381572683004213,540369123875778033

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

%C Column 2 of A237738.

%H R. H. Hardin, <a href="/A237735/b237735.txt">Table of n, a(n) for n = 1..33</a>

%e Some solutions for n=3

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

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

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

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

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

%Y Cf. A237738.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 12 2014

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Last modified September 27 03:24 EDT 2022. Contains 357051 sequences. (Running on oeis4.)