1,3
Cf. A071084, A000203.
Sequence in context: A057399 A145223 A072129 * A187525 A187696 A005212
Adjacent sequences: A085508 A085509 A085510 * A085512 A085513 A085514
sign
Yuval Dekel (dekelyuval(AT)hotmail.com), Aug 19 2003