0,1
Cf. A042869.
Sequence in context: A161347 A107941 A142684 this_sequence A047689 A108268 A091348
Adjacent sequences: A042865 A042866 A042867 this_sequence A042869 A042870 A042871
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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