25865840

Appears in sequences

• Denominator of Sum_{k=1..n} d(k)/k, where d() = A000005().at n=20A065080
• Denominator of Sum_{k=1..n} d(k)/k, where d() = A000005().at n=21A065080
• Denominators of Sum_{k=1..n} 1/lcm(n,k).at n=20A074949
• Denominator of b(n), where Sum_{k>=1} b(k)/k^r = 1/(Sum_{k>=1} H(k)/k^r). H(k) = Sum_{j=1..k} 1/j, the k-th harmonic number.at n=20A097504
• Denominator of Sum_{i=1..n} 1/(i*C(2*i,i)).at n=10A112100
• a(n) = lcm{1 <= k <= n, gcd(k, 3) = 1}.at n=19A128501
• a(n) = lcm{1 <= k <= n, gcd(k, 3) = 1}.at n=20A128501
• a(n) = lcm{1 <= k <= n, gcd(k, 3) = 1}.at n=21A128501
• a(n) = lcm{1 <= k <= n, gcd(k, 3) = 1}.at n=22A128501
• Denominator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=3.at n=10A145614
• Denominator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=9.at n=9A145626
• Denominator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=9.at n=10A145626