0,1
Cf. A042557.
Sequence in context: A042550 A042548 A042558 this_sequence A042560 A042562 A042564
Adjacent sequences: A042553 A042554 A042555 this_sequence A042557 A042558 A042559
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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