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A181007 Number of (n+3)xn binary matrices with rows and columns each in strictly increasing order as binary numbers and each row and column having an even number of 1s 0

%I #2 Mar 31 2012 12:35:49

%S 0,0,0,1,199,59805,41985610,78452652352,425192615407453

%N Number of (n+3)xn binary matrices with rows and columns each in strictly increasing order as binary numbers and each row and column having an even number of 1s

%C Subdiagonal 3 of A181004

%e All solutions for 7X4

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

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

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

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

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

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

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

%K nonn

%O 1,5

%A _R. H. Hardin_ Sep 30 2010

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Last modified September 5 16:49 EDT 2024. Contains 375700 sequences. (Running on oeis4.)