Problem 52764. Easy Sequences 24: Number of Coprime Lattice Points
Given a number 'n', you were tasked to mark and count all coprime lattice points at the first quadrant bounded by the points (0,0), (0,n), (n,n) and (n,0). A coprime lattice point is a point (x,y), where x and y are coprime integers.
For example for n = 15, 145 points would be marked (see figure below).
NOTE: One is coprime to all integers including zero. Except for 1, zero is not coprime to any other integer, not even to zero itself.
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers7
Suggested Problems
-
272 Solvers
-
Decimation - Optimized for speed
160 Solvers
-
Not square-free number sequence
63 Solvers
-
Project Euler: Problem 11, Largest product in a grid
91 Solvers
-
3703 Solvers
More from this Author116
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!