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.
Remove the small words from a list of words.
Sorted highest to lowest?
Get the length of a given vector
Add more zeros
Triangular Tiling Dots in a Circle
Radial Zernike polynomials
Dots in a Diamond
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