0,2
a(n)=A017910(3n). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 28 2008
Sequence in context: A005803 A145654 A074352 this_sequence A102880 A137104 A137103
Adjacent sequences: A017925 A017926 A017927 this_sequence A017929 A017930 A017931
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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