0,7

A Moebius triple count.

Numbers appear in triples or multiples of triples.

Table of n, a(n) for n=0..75.

Sequence in context: A096056 A050501 A327469 * A220845 A073750 A270059

Adjacent sequences: A105587 A105588 A105589 * A105591 A105592 A105593

easy,nonn

Paul Barry, Apr 14 2005

approved