Hi, your logic is correct but 'nchoosek' hogs memory space. there is a better way...
Find the sum of all the numbers of the input vector
Remove any row in which a NaN appears
Volume of a Parallelepiped
Lychrel Number Test (Inspired by Project Euler Problem 55)
Easy Sequences 16: Volume of Embedded Octahedron
Easy Sequences 62: Sum of Omega-3 Function
Easy Sequences 21: Combinatorial Summations
Easy Sequences 37: Natural Factorable Polynomials
Easy Sequences 25: Product of Series
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