Return the 3n+1 sequence for n
Prime factor digits
surface of a spherical planet
Calculate the area of a triangle between three points
Create an index-powered vector
Create a matrix X, where each column is a shifted copy of the vector v
Matrix which contains the values of an other matrix A at the given locations.
First non-zero element in each column
Duplicate each element of a vector.
Find the elements of a matrix according to a defined property.
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