0,1
Cf. A002487, A071885, A071884, A071887.
Adjacent sequences: A071883 A071884 A071885 this_sequence A071887 A071888 A071889
Sequence in context: A141898 A054998 A067378 this_sequence A087939 A142411 A139924
nonn
njas and J. H. Conway, Jun 10 2002
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