10039179150
domain: N
Appears in sequences
- Denominator of (1/n)*Sum_{k=0..n-1} 1/binomial(n-1,k) for n>0 else 1.at n=27A046879
- Denominator of (1/n)*Sum_{k=0..n-1} 1/binomial(n-1,k) for n>0 else 1.at n=28A046879
- Least common multiple of all cycle sizes in range [A014137(n-1)..A014138(n-1)] of permutation A089865/A089866.at n=15A089845
- 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=27A097504
- Denominator of the polynomial A_l(x) = Sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=2.at n=13A145612
- Smallest n-digit number m such that phi(m) is minimal.at n=10A147550
- With a(1) = 1, a(n) is the LCM of all 0 < m < n for which a(m) divides n.at n=27A271504