I'm not sure what is the point of eliminating 'ifs'? At any rate they can be easily replaced by e.g. 'while' loops, so in my opinion you should either eliminate both of them or none.
Again, the best way to generate such a sequence is using depth-first search or recursion. By prohibiting the usage of IFs, all solutions are inefficient (because we can't cut the tree, and are forced to follow all branches).
Remove any row in which a NaN appears
Change the sign of even index entries of the reversed vector
Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Dots in a Circle
Slicing the cube
Compute the intersect point of line and plan
Find the right number make the equation
Seperate array to small section according to its index position
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Determine if input is a Narcissistic number
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