0,2
Cf. A032781, A032783.
Sequence in context: A004137 A080060 A004131 this_sequence A076523 A129403 A154287
Adjacent sequences: A032779 A032780 A032781 this_sequence A032783 A032784 A032785
nonn
Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.
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