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A223614 Number of n X n 0..1 arrays with rows and columns unimodal 0

%I #5 Dec 18 2015 18:18:31

%S 2,16,240,4466,89630,1856100,39162020,840122330,18350758538,

%T 409124396540,9333564282142,218396645933584,5252293916506694

%N Number of n X n 0..1 arrays with rows and columns unimodal

%C Diagonal of A223620

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 24 2013

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)