0,2
Cf. A007451.
Sequence in context: A053566 A009483 A124916 this_sequence A037271 A074955 A143663
Adjacent sequences: A007415 A007416 A007417 this_sequence A007419 A007420 A007421
nonn,frac
N. J. A. Sloane (njas(AT)research.att.com).
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