|Journal of Integer Sequences, Vol. 10 (2007), Article 07.8.4|
North Carolina Agricultural and Technical State University
Greensboro, NC 27411
(Concerned with sequences A000670 A000828 A002866 A050351 and A080635 .)
Received May 14 2007; revised version received August 7 2007. Published in Journal of Integer Sequences, August 13 2007.