1393459200

Appears in sequences

• Ratios of successive terms are 1,2,2,3,4,4,5,6,6,...at n=14A004527
• a(n) = Product_{p prime} p^{ Sum_{k>=0} floor[(n-1)/((p-1)p^k)]}.at n=8A053657
• Denominators in expansion of (1-x)^(-1/x)/e.at n=8A055535
• Duplicate of A053657.at n=8A075265
• Fifth column of triangle A075503.at n=5A076005
• Maximal order of a finite subgroup of the group GL(n,Q).at n=8A085495
• Double-superfactorials: a(n) = Product_{k=1..n} (2k)!.at n=4A098694
• Cumulative product of double factorial A006882.at n=8A113296
• a(n) is the product of the positive integers each of which is <= n and is divisible by exactly one prime dividing n (but is coprime to every other prime dividing n). (a(1) = 1).at n=19A119794
• Duplicate of A098694.at n=4A137592
• Expansion x^2*cotan(x)/(exp(x^2*cotan(x))-1) = Sum_{n>=0} a(n)*x^n/(n+1)!^2.at n=9A199541
• Bisection of A055535.at n=4A239898
• Denominators of fractions appearing in a generalization of Carleman's inequality.at n=8A249277
• Denominators of an asymptotic series for the Gamma function (even power series).at n=4A277001
• a(n) = product of numbers k < n such that 1 < gcd(k,n) and rad(k) != rad(n).at n=19A381674