0,2
Cf. A042552.
Sequence in context: A007119 A064794 A127005 this_sequence A042139 A118127 A100644
Adjacent sequences: A042550 A042551 A042552 this_sequence A042554 A042555 A042556
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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