3392780147

Appears in sequences

• Numerators of coefficients in expansion of x^2*(1-exp(-2*x))^(-2).at n=28A098087
• Numerator of zeta(4n)/zeta(2n)^2 (with a(0)=2 instead of -2).at n=7A114362
• Numerator of zeta(4n)/(zeta(2n) * Pi^(2n)).at n=7A231273
• Largest divisor of A246006(n) whose prime factors are all >= n+2.at n=28A241601
• Numerators of coefficients in series expansion of Cl_2(x)+x*log(x), where Cl_2 is the Clausen function of order 2.at n=29A249699
• Numerator of the rational part of the sum of reciprocals of even powers of even numbers, i.e., Sum_{k>=1} 1/(2*k)^(2*n).at n=13A276594
• Eisenstein series E_28(q) (alternate convention E_14(q)), multiplied by 3392780147.at n=0A282401
• Numerators of coefficients at even powers in Taylor series expansion of log(x/sin(x)).at n=14A283301
• a(n) = numerator(((i^n * PolyLog(1 - n, -i) + (-i)^n * PolyLog(1 - n, i))) / (4^n - 2^n)) if n > 0 and a(0) = 1. Here i denotes the imaginary unit.at n=28A342318
• Conjectural order of the torsion subgroup of the group K_n(Z) (the algebraic K-theory groups of the integers).at n=54A345267