0,2
Cf. A042128.
Sequence in context: A001072 A077900 A041231 this_sequence A141723 A100845 A019169
Adjacent sequences: A042126 A042127 A042128 this_sequence A042130 A042131 A042132
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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