1,3
Cf. A000252.
Sequence in context: A063436 A010004 A059145 this_sequence A039369 A119138 A043192
Adjacent sequences: A086640 A086641 A086642 this_sequence A086644 A086645 A086646
nonn
Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 26 2003
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