61152952320
domain: N
Appears in sequences
- a(n) = Product_{k=1..n} d(2*k), where d() is the number of divisors function A000005.at n=15A334767
- 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=25A341109