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!
Project Euler: Problem 10, Sum of Primes
Back to basics 9 - Indexed References
Largest Twin Primes
Create matrix of replicated elements
Dots in a Diamond
Chebyshev polynomials of the 1st Kind
Radial Zernike polynomials
Chebyshev polynomials of the 2nd Kind
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