2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/71277An easy generalization of Beukers' integrals allows us to conjecture a double integral formula involving the zeta and the gamma functions. A special case of this formula is Sondow's double integral formula for Euler's constant gamma.2 pagesNumber Theory11M06A conjecture-generalization of Sondow's formulatext