0,2
Cf. A042056.
Sequence in context: A030985 A053313 A166825 this_sequence A137322 A158980 A069121
Adjacent sequences: A042054 A042055 A042056 this_sequence A042058 A042059 A042060
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).
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