Return how many integer grid points there are inside a 3D sphere of radius r centred at (0,0,0) (including points on the edge).
Neither string operations nor interpolations are allowed!
Find the two-word state names
Replace May with April
03 - Matrix Variables 2
Dots in a Circle
Hexagonal Tiling Dots in a Circle
Chebyshev polynomials of the 1st Kind
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