OFFSET
1,2
LINKS
H. U. Besche, B. Eick and E. A. O'Brien, Number of isomorphism types of finite groups of given order
David Burrell, On the number of groups of order 1024, Communications in Algebra, 2021, 1-3.
PROG
(Magma) /* Program returns -1 for an order o if the groups of that order are not contained in the Small Groups Library */ D := SmallGroupDatabase(); S := []; for o in [1..2047] do if (o eq 1 or IsPrimePower(o)) and not IsPrime(o) then if IsInSmallGroupDatabase(D, o) then a := NumberOfSmallGroups(D, o); else a := -1; end if; Append(~S, a); end if; end for; S; /* Klaus Brockhaus, Mar 15 2007 */
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Oct 14 2004
EXTENSIONS
a(30) corrected by Klaus Brockhaus, Mar 15 2007
a(27) corrected by David Burrell, Jun 06 2022
STATUS
approved