1,2
Cf. A147552, A151837, A139250.
Probably different from A160721 (the latter needs more terms!).
Sequence in context: A048223 A014012 A160721 this_sequence A147582 A162793 A109045
Adjacent sequences: A151833 A151834 A151835 this_sequence A151837 A151838 A151839
nonn,more
N. J. A. Sloane (njas(AT)research.att.com), Jul 13 2009
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