637009920

Appears in sequences

• Product of all composite numbers from 1 to the n-th nonprime number divided by product of all the prime divisors of each of those composite numbers which exceed the previously stated value.at n=15A084744
• Number of 1-2-3-avoiding permutations with exactly thrice the 1-3-2 pattern.at n=21A093374
• a(n) = denominator(p(n, x)) / (n!*denominator(bernoulli(n, x))), where p(n, x) = Sum_{k=0..n} E2(n, k)*binomial(x + k, 2*n) / Product_{j=1..n} (j - x) and E2(n, k) are the second-order Eulerian numbers A201637.at n=20A341109