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%I #2 Mar 30 2012 16:51:55
%S 3,8,19,53,162,540,2043
%N Number of 2-generator groups of order 2^n.
%D B. Eick, Computing p-groups with trivial Schur multiplier, J. Algebra, 322 (2009), 741-751.
%D B. Eick and E. O'Brien, Enumerating p-groups, J. Australian Math. Soc., 67 (1999), 191-205.
%Y Cf. A170901, A170902.
%K nonn
%O 3,1
%A _N. J. A. Sloane_, Jan 19 2010
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