Superb job of not giving away answers in the test suite.
The solutions for x<-1 would require y^2<0.
William, expand the right side.
Return the 3n+1 sequence for n
Remove any row in which a NaN appears
Project Euler: Problem 7, Nth prime
Reverse the elements of an array
List Proth primes
Characterize the final state of another digit inventory sequence
Count unique orderings of vertices of a polygon
Solve an ODE: equation B
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