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] -> 
Prime factor digits
given 3 sides, find area of this triangle
Whether the input is vector?
Number of digits in an integer
05 - Vector Equations 1
BLOCK x3 (Version 3)
Numbers spiral diagonals (Part 2)
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