Test added to discourage lookup table solutions.
In the problem description, r1 and r2 appear to be upside down.
Corrected. Thanks, Tim.
First N Perfect Squares
"Low : High - Low : High - Turn around " -- Create a subindices vector
Matrix with different incremental runs
Matrix Construction I
List the erauqs
Guess the card in Fitch Cheney’s five-card trick
List composite numbers that cannot be written as the sum of two primes
Compute the nth Pythagorean prime
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