1,1
See A111105 for further information.
Sequence in context: A048426 A069330 A111105 this_sequence A118059 A028500 A133251
Adjacent sequences: A137556 A137557 A137558 this_sequence A137560 A137561 A137562
nonn
R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 20 2008
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