As a heads up, http://oeis.org/A138591 counts 1 as a polite number, but the test suite does not.
Test if a Number is a Palindrome without using any String Operations
Are you in or are you out?
Generate a NaN...on purpose
Symmetry of vector
04 - Scalar Equations 3
Arithmetic/geometric sequence, 50/50
Pancakes for everyone!
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Pernicious Anniversary Problem
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