4472029801domain: NAppears in sequencesSum_{k>=1} 1/(tanh(k*Pi) * k^(4n-1)) = Pi^(4n-1)*A057866(n)/A057867(n).at n=5A057866Coefficients of Zeta(2*n+1) in a certain integer relation involving Ramanujan exponential-type sums.at n=10A119546