Further info from US government sources:

Sawtooth oaks planted on reasonably productive sites using the guidelines described here will produce prolific crops of acorns in 7 to 10 years. Acorn production is fairly consistent year to year. However, minimal crops can be expected following late spring or early fall frosts. Yields from mature trees in good years range from 1,000 to 1,300 pounds of acorns per tree.

Sawtooth Oak, native to Japan, China, and Korea, is a species introduced because of its rapid establishment and heavy fruit production at an early age, serving as a source of food in late summer and throughout autumn for wildlife. Large birds (crows, bluejays, turkeys), squirrels, deer, racoons, opossums, and other mammals love the large, abundant crops of acorns, which are borne heavily every other year, if not every year. This Oak is easy to identify by its pyramidal shape in youth, striated young bark, retained winter foliage, acorns with frilled caps, and finely serrated leaves (from which it gets its common name). It is planted throughout most of Ohio, and may reach 60 feet tall by 60 feet wide at maturity, when found in the open. As a member of the Red Oak group and the Beech Family, it is related to the Beeches, Chestnuts, and other Oaks.

Dan O.