464486400

Appears in sequences

• Denominators of coefficients for numerical integration.at n=3A002198
• a(n) = (2*n+4)!!/4!!, related to A000165 (even double factorials).at n=8A051578
• Expansion of e.g.f. x^2*(1-x)/(1-2*x).at n=10A052587
• A triangular sequence based on expansion of the rational polynomial of A001788 as a Sheffer sequence: p(x,t)=Exp[x*t]*(-1/(2*t - 1)^3).at n=36A138192
• Irregular triangle T(n,m), denominators of coefficients in a power/Fourier series expansion of the plane pendulum's exact time dependence.at n=20A274131
• a(n) = n*(n+2)*(n+4)*(n+6)*(n+8)*(n+10)*(n+12)*(n+14).at n=6A346515
• a(n) = n*n! / Product_{k=1..n} radical(k), where radical(n) is the product of distinct prime factors of n, cf. A007947.at n=35A387151