0,3
Cf. A000108.
Sequence in context: A073101 A130851 A130856 this_sequence A145434 A117899 A120839
Adjacent sequences: A004092 A004093 A004094 this_sequence A004096 A004097 A004098
nonn,base
N. J. A. Sloane (njas(AT)research.att.com).
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