0,2
Cf. A042230.
Sequence in context: A043073 A022128 A041381 this_sequence A019408 A070045 A063557
Adjacent sequences: A042228 A042229 A042230 this_sequence A042232 A042233 A042234
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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