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%I #15 Jul 14 2022 13:56:44
%S 1,5,28,256,4471,187300,22290203,8267860926
%N Number of n X n rational {0,1}-matrices of determinant 0, up to row and column permutations.
%H Miodrag Zivkovic, <a href="https://doi.org/10.1016/j.laa.2005.10.010">Classification of small (0,1) matrices</a>, Linear Algebra and its Applications, 414 (2006), 310-346.
%F a(n) = A002724(n) - A116976(n). - _Max Alekseyev_, Feb 28 2010
%Y Cf. A046747, A002724, A116976.
%K nonn,more
%O 1,2
%A _Vladeta Jovovic_, Apr 01 2006
%E a(8) from _Alois P. Heinz_, Jun 30 2022
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