0,2
Cf. A042518.
Sequence in context: A041845 A139196 A103426 this_sequence A050983 A002429 A064345
Adjacent sequences: A042516 A042517 A042518 this_sequence A042520 A042521 A042522
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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