233100

Appears in sequences

• Triangle of "Harmonic Coefficients" T(n,k), read by rows: (Sum_{i=1..n} T(n,i) * k^i) * k! / ((n+k)! * n!) = (Sum_{i=1..k} (1/i-1/(i+n)) = n * (Sum_{i=1..k} 1/(i*(i+n)))).at n=18A027858
• Numbers with prime factorization pqr^2s^2t^2.at n=22A190379
• a(n) is the smallest integer that has exactly n divisors from A333369.at n=27A355771