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%I #6 Apr 20 2020 19:46:33
%S 2,16,512,39330,9116396,4977655636,6910434801148,22619851307136958,
%T 176312563812861434000
%N Number of n X n 0..1 arrays with every repeated value in every row and column greater than or equal to the previous repeated value.
%C Diagonal of A267735.
%e Some solutions for n=4
%e ..1..0..1..0....1..1..0..1....1..0..0..1....0..0..0..0....0..1..1..0
%e ..0..1..0..0....0..1..1..1....0..0..1..0....0..0..0..0....0..1..1..1
%e ..0..0..1..1....1..1..1..1....0..0..1..0....0..0..1..1....1..1..1..0
%e ..0..0..0..0....0..1..0..0....1..1..1..1....1..0..1..0....1..0..1..0
%Y Cf. A267735.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 20 2016
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