1,1
Cf. A050643, A048565, A050648.
Sequence in context: A017295 A154713 A061719 this_sequence A050648 A070903 A159386
Adjacent sequences: A050639 A050640 A050641 this_sequence A050643 A050644 A050645
nonn,base,more
Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1999.
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