As a heads up, http://oeis.org/A138591 counts 1 as a polite number, but the test suite does not.
The Goldbach Conjecture, Part 2
Back to basics 11 - Max Integer
Back to basics 23 - Triangular matrix
Create a Multiplication table matrix...
01 - Scalar variables
Calculate the Damerau-Levenshtein distance between two strings.
Alternative Scoring. Create an incremental spiral.
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