1,3
Cf. A139250, A159786, A159789, A159799.
Sequence in context: A004018 A028658 A028642 this_sequence A069523 A021231 A155502
Adjacent sequences: A159793 A159794 A159795 this_sequence A159797 A159798 A159799
more,nonn
Omar E. Pol (info(AT)polprimos.com), Jun 13 2009
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