%I #5 Dec 12 2012 00:06:38
%S 0,2,40,584,1695296
%N Number of nonsingular n X n real {0,1}-matrices such that all upper left i X i submatrices are singular for i = 1..n-1.
%Y Cf. A125587, A125593, A127182, A127183.
%K nonn
%O 1,2
%A _Artur Jasinski_, Jan 08 2007