Replicate each element of a row vector (with NaN) a constant number of times.
n=2, A=[1 2 3] -> [1 1 2 2 3 3]
n=0, A=[2 1] -> 
Sum of first n terms of a harmonic progression
Number of 1s in a binary string
Return elements unique to either input
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Basics: 'Find the eigenvalues of given matrix
BLOCK x3 (Version 4)
Mirror, mirror on the wall, who is fairest of them all?
Longest Collatz Sequence
Find indices of diagonal elements
Numbers spiral diagonals (Part 2)
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