4165258

Appears in sequences

• Numerator of Sum_{k=1..n} mu(k)/k.at n=25A070888
• Numerator of Sum_{k=1..n} mu(k)/k.at n=26A070888
• Numerator of Sum_{k=1..n} mu(k)/k.at n=27A070888
• Numerator of Sum_{k=1..n} mu(k)/k when it changes sign.at n=9A070890
• Number of n X 4 nonnegative integer arrays with upper left 0 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=18A252934
• 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=16A385808