1,1
Cf. A000040, A000668, A144231, A144232
Sequence in context: A171720 A091751 A055559 * A125074 A033519 A103656
Adjacent sequences: A144230 A144231 A144232 * A144234 A144235 A144236
nonn
Reikku Kulon (reikku(AT)gmail.com), Sep 15 2008