[seqfan] enumerating Z and log(p/q)

[Jaume Oliver i Lafont]

Dear all,

Are there references for A166711 and 166871?
http://www.research.att.com/~njas/sequences/?q=id:A166711|id:A166871

A related underlying identity is log(p/q) = lim h(p*n)-h(q*n) as
n->oo, where h(n) is the n-th harmonic number.

Jaume