A polite number is an integer that sums of at least two consecutive positive integers.
For example 7 = 3+4 so 7 is a polite number.
Given N return N-th polite number.
See also 2595
As a heads up, http://oeis.org/A138591 counts 1 as a polite number, but the test suite does not.
Angle between Two Vectors
Doubling elements in a vector
Make a 1 hot vector
Is the input divisible by 3?
Returning a "greater than" vector
Polite numbers. Politeness.
Another colon problem
(Linear) Recurrence Equations - Generalised Fibonacci-like sequences
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