1,1
Cf. A000040, A111071, A152527, A152528, A152529, A152531, A152532.
Sequence in context: A066009 A037241 A154141 this_sequence A065099 A001345 A056613
Adjacent sequences: A152527 A152528 A152529 this_sequence A152531 A152532 A152533
easy,nonn
Omar E. Pol (info(AT)polprimos.com), Dec 06 2008
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