1,2
Cf. A002858.
Sequence in context: A173162 A198104 A100805 * A114585 A161641 A053754
Adjacent sequences: A068797 A068798 A068799 * A068801 A068802 A068803
easy,nonn
Naohiro Nomoto (n_nomoto(AT)yabumi.com), Mar 29 2002