1,1
Cf. A080984, A080581.
Sequence in context: A162077 A111266 A098851 this_sequence A132555 A129220 A129221
Adjacent sequences: A080983 A080984 A080985 this_sequence A080987 A080988 A080989
nonn
Hugo Pfoertner (hugo(AT)pfoertner.org), Feb 26 2003
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