39813120

Appears in sequences

• Multi-level primorials: triangle with a(n,k)=a(n-1,k-1)*a(n-1,k) but with a(n,1)=p(n) and a(n,n)=2.at n=33A066119
• Greatest common divisors of rows of triangle A075181 and of (unsigned) triangle A048594.at n=33A075182
• Denominators of rational coefficients in a series expansion of z! = Gamma(z+1), convergent for Re(z) >= 0, given as equation (21) in the referenced paper by Lanczos.at n=3A090675
• a(n) = n!/A093888(n).at n=16A093889
• a(n) = product{k=1 to n} A127562(k).at n=9A127564
• Denominators of an asymptotic series for the factorial function (Stirling's formula with half-shift).at n=4A144618
• Numbers that set records for number of ordered factorizations as A025487(j)*A025487(k).at n=34A182763
• a(n) = phi(lcm(1,2,3,...,n)), where phi is Euler's totient function.at n=18A217863
• a(n) = phi(lcm(1,2,3,...,n)), where phi is Euler's totient function.at n=19A217863
• a(n) = phi(lcm(1,2,3,...,n)), where phi is Euler's totient function.at n=20A217863
• a(n) = phi(lcm(1,2,3,...,n)), where phi is Euler's totient function.at n=21A217863
• Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 5.at n=20A264656
• Continued fraction of a constant t with partial denominators {a(n), n>=0} such that the continued fraction of 4*t yields partial denominators {6*a(n), n>=0}.at n=127A320410
• The number of ordered n-tuples consisting of n permutations (not necessarily distinct) such that the first element of each of them is the same.at n=4A342573
• Numbers m > 1 such that for all k > 1, m can be written as a product of factorials without using k!.at n=31A359751