1,1
Cf. A030691.
Sequence in context: A119633 A017223 A017331 this_sequence A017451 A017583 A046232
Adjacent sequences: A030687 A030688 A030689 this_sequence A030691 A030692 A030693
nonn,base
Patrick De Geest (pdg(AT)worldofnumbers.com)
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