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%I #15 Sep 03 2023 10:24:56
%S 1,2,4,9,19,49,131,424,1652
%N Duplicate of A076893.
%C Duplicate of A076893. - _R. J. Mathar_, Jan 03 2009
%D A. Evnin. An elementary Introduction to Matroids, Mathematical Education, 2(33), 2005, 2-33.
%H A. Evnin, <a href="http://www.mathnet.ru/eng/mo412">An elementary Introduction to Matroids</a>, Mathematical Education 2 (33) (2005), 2-33
%Y Cf. A034343.
%K dead
%O 1,2
%A _Alexander Evnin_, Dec 26 2008
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