375035183

Properties

Appears in sequences

• As p runs through the primes >= 5, sequence gives { numerator of Sum_{k=1..p-1} 1/k } / p^2.at n=7A061002
• Reduced numerators of the raw moments of the distribution of areas for triangles picked at random in a unit square.at n=26A093158
• Largest prime factor of Stirling numbers of first kind s(n,2) = A000254(n).at n=26A120299
• Numerator((p-1)*H(p-1))/p^2 for p = prime(n) > 3, where H(k) is k-th harmonic number A001008(k)/A002805(k).at n=7A120308
• a(n) = squarefree part of A145609(n).at n=13A145738
• Least prime p such that H(n) == 0 (mod p) but H(k) == 0 (mod p) for no 0 < k < n, or 1 if such a prime p does not exist, where H(n) denotes the n-th harmonic number sum_{k=1..n}1/k.at n=27A242223
• Largest prime factor of A001008(n), numerator of n-th harmonic number; a(1) = 1.at n=27A308971
• Prime numbersat n=20073577