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%I #11 Jun 07 2022 08:14:34
%S 1,1,2,2,5,5,14,15,4,51,14,52,13,267,50,231,47,2328,197,37,1543,12,
%T 177,208,56092,1045,162,20169,41,775,1213,10494213,8681,840,1090235,
%U 186,4725,150,11394,49487367289,583,157877,131,3609,5958,408641062,1005
%N Number of nonisomorphic groups with orders indexed by least prime signatures.
%H H. U. Besche, B. Eick and E. A. O'Brien, <a href="http://www.icm.tu-bs.de/ag_algebra/software/small/number.html">Number of isomorphism types of finite groups of given order</a>
%H David Burrell, <a href="https://doi.org/10.1080/00927872.2021.2006680">On the number of groups of order 1024</a>, Communications in Algebra, 2021, 1-3.
%F a(n)=A000001(A025487(n)).
%K nonn
%O 1,3
%A _Lekraj Beedassy_, Oct 14 2004
%E a(40) corrected by _David Burrell_, Jun 07 2022
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