1915538625

Appears in sequences

• a(n) = (2n-1)!!/lcm{1,3,5,...,2n-1}.at n=19A025549
• a(n) = (2n-1)!!/lcm{1,3,5,...,2n-1}.at n=20A025549
• a(n) = (2n-1)!!/lcm{1,3,5,...,2n-1}.at n=21A025549
• Denominators of coefficients in Taylor series for log(tan(x)/x).at n=6A047686
• a(n) = A091137(n)/2^n.at n=14A165636
• a(n) = A091137(n)/2^n.at n=15A165636
• a(n) = Product_{3 <= p <= 2*n+1, p prime} p^floor(2*n / (p - 1)).at n=7A171080
• Denominator of the coefficient of x^(2n) in expansion of 1/x^4 - 1/(3*x^2) - 1/(x^3*arctanh(x)).at n=5A195466
• Denominator of the coefficient of [x^(2n)] of the Taylor series log(cosec(x)*arctanh(x)).at n=6A202602
• Denominators of coefficients in Taylor series expansion of log(cotan(x)*arctan(x)).at n=7A202621
• Partial products of A006257.at n=16A375959
• Numerator of (2^n - 1)*n! / 2^(n+1).at n=12A382709