As a heads up, http://oeis.org/A138591 counts 1 as a polite number, but the test suite does not.
Count from 0 to N^M in base N.
Sum all integers from 1 to 2^n
Back to basics 15 - classes
Back to basics 25 - Valid variable names
Polite numbers. Politeness.
Don't Try, give up and return NaN.
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