Test for randomness could be tightened (cf. Solution 1490988).
Make a run-length companion vector
Duplicate each element of a vector.
Perfect Square or not
Calculate square and cube of number
BASICS - sum part of vector
01 - Scalar variables
04 - Scalar Equations 1
03 - Matrix Variables 4
05 - Vector Equations 2
05 - Vector Equations 3
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