0,2
Cf. A007565.
Sequence in context: A112078 A145121 A062788 this_sequence A013765 A013891 A045098
Adjacent sequences: A048286 A048287 A048288 this_sequence A048290 A048291 A048292
nonn,nice,hard
N. J. A. Sloane (njas(AT)research.att.com).
Arlin Anderson (starship1(AT)gmail.com)
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