0,2
Cf. A006506 for flat version.
Sequence in context: A117650 A144038 A027842 this_sequence A000829 A061825 A077536
Adjacent sequences: A027680 A027681 A027682 this_sequence A027684 A027685 A027686
nonn
R. H. Hardin (rhhardin(AT)att.net)
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