0,4
Cf. A000111.
Sequence in context: A101151 A138788 A030244 this_sequence A062642 A093484 A041069
Adjacent sequences: A004147 A004148 A004149 this_sequence A004151 A004152 A004153
nonn,base
N. J. A. Sloane (njas(AT)research.att.com).
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