1,1
Cf. A007953.
Sequence in context: A119052 A029774 A095920 this_sequence A060522 A086115 A111434
Adjacent sequences: A134553 A134554 A134555 this_sequence A134557 A134558 A134559
nonn
Ctibor Zizka (ctibor.zizka(AT)seznam.cz), Jan 22 2008
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