0,3
Cf. A000108.
Sequence in context: A127974 A012801 A162035 this_sequence A156152 A106885 A072439
Adjacent sequences: A004093 A004094 A004095 this_sequence A004097 A004098 A004099
nonn,base
N. J. A. Sloane (njas(AT)research.att.com).
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