0,1
Cf. A006881, A007304.
Sequence in context: A090615 A081430 A147670 this_sequence A118419 A091291 A163681
Adjacent sequences: A058891 A058892 A058893 this_sequence A058895 A058896 A058897
nonn
Naohiro Nomoto (6284968128(AT)geocities.co.jp), Jan 08 2001
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