This series reminded me of a Numberphile video: https://youtu.be/vNTSugyS038
It is a good idea to apply an upper bound! It seems that the upBound becomes an underestimate of the upper bound for test case 2.
Yes, I was looking for something cody-friendly :). I forgot it works in this form iff gcd(n(1),n(2))==1.
Angle between two vectors
Getting the absolute index from a matrix
Duplicate each element of a vector.
Reverse the elements of an array
How Far Can You Throw Something?
Muphry's Law of MATLAB
Three...is a magic number.
Pandigital Factors (Based on Euler 491)
Golomb's self-describing sequence (based on Euler 341)
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