0,3
Cf. A042262.
Sequence in context: A007676 A113873 A042443 this_sequence A153439 A119064 A048788
Adjacent sequences: A042260 A042261 A042262 this_sequence A042264 A042265 A042266
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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