Return the volume of a regular n-simplex with a unit side length.
Results are up to 4*eps precision.
Neither string operations nor interpolations are allowed!
Good problem, in the sense that it disallows many of the hacks used to cook a problem.
Number of Horns on a unicorn!
Create an 'arrow-head" matrix
Sum the numbers on the main diagonal
Triangular Tiling Dots in a Circle
Radial Zernike polynomials
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