Test added to discourage lookup table solutions.
In the problem description, r1 and r2 appear to be upside down.
Corrected. Thanks, Tim.
Make a checkerboard matrix
Whether the input is vector?
Is X a Fibonacci Matrix?
Guess the Coefficients!
Find the nth nude number
Determine whether a square can be drawn on a grid of dots
Determine whether a prime is Pythagorean
Eliminate redundant numbers in text
Characterize the final state of another digit inventory sequence
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