1,2
Cf. A050640, A048564, A050647.
Sequence in context: A113382 A132688 A155104 this_sequence A112396 A096947 A042533
Adjacent sequences: A050638 A050639 A050640 this_sequence A050642 A050643 A050644
nonn,base,more
Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1999.
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