0,1
Cf. A006094, A002110.
Sequence in context: A067885 A072940 A147573 this_sequence A138206 A031853 A066576
Adjacent sequences: A046321 A046322 A046323 this_sequence A046325 A046326 A046327
nonn
Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.
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