9676800

Appears in sequences

• Denominators of expansion of Fresnel integral S(z).at n=3A003031
• a(n) = 2^n*n!*(2*n+1).at n=7A014481
• a(n) = (2*n+8)!!/8!!, related to A000165 (even double factorials).at n=6A051582
• a(n) = (n^2-1)*n!/3.at n=8A090672
• Greatest common divisor of multiperfect numbers and their totient.at n=27A098204
• Cumulative product of triple factorial A007661.at n=8A114778
• Triangle of coefficients of (1/sec^2(x))*D^n(sec^2(x)) in powers of t = tan(x), where D = d/dx.at n=52A185896
• Triangle read by rows: the triangle in A034855, with the n-th row normalized by dividing it by n.at n=42A235595
• a(n) = Product_{k=0..n} (3*k + 2)!.at n=2A294319
• Expansion of e.g.f. exp(x^3)/(1-x).at n=10A370696
• E.g.f. A(x) satisfies A(x) = exp( arcsinh(x * A(x)^2) ).at n=7A385440
• Numbers k such that there exist three numbers x, y and z such that k = psi(x) = psi(y) = psi(z) = x + y + z.at n=29A387290