OFFSET
1,1
COMMENTS
Every multiple of a(n) is also a term of the sequence because the direct product of a group G with any Abelian group A satisfies (GXA)' = G'.
EXAMPLE
a(1) = 96 because there is a group G of order 96 in which an element of G' is not a commutator.
CROSSREFS
KEYWORD
hard,nonn
AUTHOR
Bob Heffernan and Des MacHale, Nov 04 2008
STATUS
approved