This problem is looking for the number of vertices on the hexagonal grid inside the circle of radius r. The center of the hexagon is not counted as a point for this problem, and this is true for every hexagon inside the circle.
Make the vector [1 2 3 4 5 6 7 8 9 10]
Eight Queens Solution Checker
Flag largest magnitude swings as they occur
sum of non-primes
Chebyshev polynomials of the 2nd Kind
Generalized Laguerre polynomials
Volume of a Simplex
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