133542

Appears in sequences

• a(n) = (Product k) * (Sum 1/k), where both the product and the sum are over those positive integers k, where k <= n and gcd(k,n) = 1.at n=17A056855
• Numerator of Sum_{1<=k<=n, gcd(k,n)=1} 1/k.at n=17A093600
• a(n) = (Sum 1/k) (Product k), where both the sum and product are over those k where 1 <= k <= n/2 and gcd(k,n) = 1.at n=34A099001
• a(n) = numerator of the sum of reciprocals of the terms in n-th row of triangle A077581.at n=5A126577