Not really my solution... just a slightly cheating version of @bmtran's.
Back to basics 23 - Triangular matrix
Create a square matrix of multiples
Rotate a Matrix
Count up then down
Determine the number of odd integers in a vector
Back to basics 26 - Keywords
Back to basics 9 - Indexed References
Back to basics 15 - Benchmark
Bottles of beer
Back to basics 12 - Input Arguments
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