1,2
Cf. A161344, A163280, A163983, A164000.
Sequence in context: A144623 A048619 A116087 * A116921 A173989 A093068
Adjacent sequences: A163278 A163279 A163280 * A163282 A163283 A163284
more,sign
Omar E. Pol (info(AT)polprimos.com), Aug 08 2009