2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222755We generalize the generating formula for plane partitions known as MacMahon's formula as well as its analog for strict plane partitions. We give a 2-parameter generalization of these formulas related to Macdonald's symmetric functions. The formula is especially simple in the Hall-Littlewood case. We also give a bijective proof of the analog of MacMahon's formula for strict plane partitions.19 pages, 5 figuresCombinatoricsMathematical Physicstext