0,1
Equals 4 * A001539 - 5.
Sequence in context: A082164 A119670 A003374 this_sequence A143181 A081793 A051504
Adjacent sequences: A001530 A001531 A001532 this_sequence A001534 A001535 A001536
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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