582272390700
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=29A046879
- a(1) = 1; a(n) = smallest positive unpicked integer such that n-k divides evenly into a(n)*a(k) for every k, 1 <= k <= n-1.at n=29A091861
- Denominators of the difference between the squarefree totient analogs of the harmonic numbers and the harmonic numbers: F_n - H_n.at n=29A138321
- With a(1) = 1, a(n) is the LCM of all 0 < m < n for which a(m) divides n.at n=29A271504
- Let v = list of denominators of Farey series of order n (see A006843); let b(n) = Sum 1/(k+k'), where (k,k') are pairs of successive terms of v; a(n) = denominator of b(n).at n=14A278051
- a(n) = lcm(denominator(p(n, x))), where p(n, x) are the rational polynomials defined in A342321.at n=28A343277