3,2
Cf. A068239-A068305, A000332, A002417, A027441.
Sequence in context: A175547 A053654 A147647 * A162450 A115301 A036341
Adjacent sequences: A068246 A068247 A068248 * A068250 A068251 A068252
nonn
R. H. Hardin (rhhardin(AT)att.net), Feb 24 2002