* Joerg Arndt <arndt at jjj.de> [Jan 18. 2011 15:04]: > In A006694 there is the comment: > "Conjecture: a(n) is the number of orbits > in (Z\(2n+1)Z)* generated by 2." > > But that is the definition of the sequence, correct? > (note to myself: if so, A139035 needs editing as well) > M. F. Hasler took care of that, thanks! > [...]