-81988

Appears in sequences

• Numerator of Sum_{k=1..n} mu(k)/k.at n=18A070888
• Numerator of Sum_{k=1..n} mu(k)/k.at n=19A070888
• Numerator of Sum_{k=1..n} mu(k)/k when it changes sign.at n=6A070890
• a(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=12A385808