-6504197377domain: ZAppears in sequencesNumerator of Sum_{k=1..n} mu(k)/k.at n=32A070888a(n) = numerator of rational number Im(P(x))/Pi, for x in interval (1/A005117(n+1),1/A005117(n)), where P(x) is the prime zeta function.at n=20A385808