OFFSET
1,4
COMMENTS
Number of cyclic subgroups of order m in general affine group AGL(n,2) is 1/phi(m)*Sum_{d|m} mu(m/d)*b(n,d), where b(n,d) is number of solutions to x^d=1 in AGL(n,2).
LINKS
FORMULA
a(n) = (A063388(n)-1)/4.
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Jul 17 2001
STATUS
approved