%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