Gilmore, Bob (2006). "Introduction". In Gilmore, Bob (ed.). "Maximum Clarity" and Other Writings on Music. Urbana, IL: University of Illinois Press. p. xviii. ISBN 0-252-03098-2. 0-252-03098-2
The dimensions required for n-limit tuning are equal to the prime-counting function minus one. /wiki/Prime-counting_function
Gilmore, Bob (2006). "Introduction". In Gilmore, Bob (ed.). "Maximum Clarity" and Other Writings on Music. Urbana, IL: University of Illinois Press. p. xviii. ISBN 0-252-03098-2. 0-252-03098-2