Anecdotal evidence points toward yes.
A series of experiments between 1954 and 1962 involved nearly 1,000 participants in monitored settings to gauge any effects from LSD, including artists, academics, and many others. Some of the results from those experiments, along with a pilot study in 1966 that tested whether low dose LSD (around 50 micrograms) could aid problem solving, showed trends of possible enhanced functioning in subjects.
More recently, a team of neuroscientists in London have been studying LSD’s effects on the brain using cutting edge imaging technology. Their preliminary findings are showing support for LSD’s use in enhancing creativity and problem solving abilities, as well as making progress toward understanding the biological mechanisms behind these effects.
Microdosing is a practice that has gained much interest recently that involves regularly taking doses of LSD too small to cause noticeable changes in consciousness (around 5-10 micrograms) to enhance creativity and problem solving.
Much of the recent attention to LSD microdosing is owed to James Fadiman, a psychologist who was part of the LSD problem-solving experiment in the 1960s. Fadiman is conducting an informal study largely based on anecdotal reports to make the case for a controlled clinical trial.