99330

Appears in sequences

• a(n) is the smallest positive integer such that a(n)*(1^n + 2^n + ... + x^n) is a polynomial in x with integer coefficients.at n=42A064538
• Products of exactly 6 distinct primes.at n=19A067885
• Let omega(m) be the number of distinct prime divisors of m. Then a(n) is the largest n-digit squarefree number such that omega(n) > omega(j) for all j < n.at n=4A074112
• Numbers with six distinct prime divisors.at n=24A074969
• Largest n-digit number with maximal number of distinct prime divisors.at n=4A091800
• Numbers n such that the denominator of the 2n-th Bernoulli number is divisible by n but sum_{d|n} sigma(d)/phi(d) is not an integer.at n=29A099008
• Denominators of z-sequence for the Sheffer matrix (triangle) A094816 (coefficients of Poisson-Charlier polynomials).at n=42A130190
• Triangle of Gely numbers, read by rows.at n=49A132795
• Least number k such that all coefficients of k*B(n,x), the n-th Bernoulli polynomial, are integers.at n=42A144845
• Product of sexagesimal digits of Fibonacci numbers in base-60 representation.at n=35A261598
• Numbers k such that usigma(k) >= 3*k, where usigma(k) = sum of unitary divisors of k (A034448).at n=16A285615
• Expansion of 30*x*(1 + x) / (1 - x)^4.at n=20A316459
• Numbers k > 2 such that omega(k) > log(log(k)) + 2 * sqrt(log(log(k))), where omega(k) is the number of distinct primes dividing k (A001221).at n=27A336910
• Products of 6 distinct primes that are sandwiched between semiprime numbers.at n=5A378627
• Squarefree 3-abundant numbers: squarefree numbers k such that A000203(k) > 3*k.at n=16A387153