0,4
Cf. A036717, A036718.
Sequence in context: A080882 A079120 A092566 this_sequence A166135 A007595 A148681
Adjacent sequences: A036716 A036717 A036718 this_sequence A036720 A036721 A036722
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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