595980

Appears in sequences

• a(n) = (2^(n-1)/(2n)!)*Product_{k=1..n} q(k) where q(n) is the denominator of B(2n), the 2n-th Bernoulli number.at n=20A069267
• a(n) = lcm(1,2,3,...,n) * (sum of Farey fractions of order n).at n=10A093627
• Numbers with prime factorization pqrst^2u^2.at n=29A190380