2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/129760For an even Dirichlet character psi, we obtain a formula for L(1,psi) in terms of a sum of Dirichlet L-series evaluated at s=2 and s=3 and a rapidly convergent numerical series involving the central binomial coefficients. We then derive a class number formula for real quadratic number fields by taking L(s,psi) to be the quadratic L-series associated with these fields.12 pages AMSLaTeXNumber Theory11M20; 11R29text