1,2
Cf. A068239-A068305, A000332, A002417, A027441.
Sequence in context: A171116 A199100 A096150 * A062031 A199522 A036201
Adjacent sequences: A068253 A068254 A068255 * A068257 A068258 A068259
nonn
R. H. Hardin (rhhardin(AT)att.net), Feb 24 2002