1,3
Essentially the same as A003485.
Sequence in context: A131625 A044952 A003485 this_sequence A072602 A049642 A050907
Adjacent sequences: A047463 A047464 A047465 this_sequence A047467 A047468 A047469
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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