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Number of n X n binary matrices M with rows in strictly increasing order such that M^2 (mod 2) also has rows in strictly increasing order
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%I #3 Dec 18 2015 18:17:26

%S 2,2,8,63,1463,96228,18531677

%N Number of n X n binary matrices M with rows in strictly increasing order such that M^2 (mod 2) also has rows in strictly increasing order

%e M and M^2 (mod 2) for 3X3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 10 2010