Farey sequence

noun1

1. •
   For a given positive integer n, the sequence of completely reduced fractions between 0 and 1 which, when in lowest terms, have denominators less than or equal to n, arranged in order of increasing size.

   • Riemann sums have also important connections with various problems from number theory, among them the Riemann Hypothesis, through their link with Farey sequences. — 2009