326149079040
domain: N
Appears in sequences
- Product of totient function: a(n) = Product_{k=1..n} phi(k) (cf. A000010).at n=18A001088
- 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=29A341109