0,2
Cf. A042526.
Sequence in context: A058275 A009712 A128793 this_sequence A015022 A160292 A099125
Adjacent sequences: A042524 A042525 A042526 this_sequence A042528 A042529 A042530
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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