1,2
Cf. A068239-A068305, A000332, A002417, A027441.
Sequence in context: A167836 A043579 A166780 * A031812 A116461 A104699
Adjacent sequences: A068302 A068303 A068304 * A068306 A068307 A068308
nonn
R. H. Hardin (rhhardin(AT)att.net), Feb 24 2002