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.
Back to basics 9 - Indexed References
Fill a zeros matrix
Find nearest prime number less than input number
Rounding off numbers to n decimals
How many solutions has this problem?
Modify subscripts - easier
Alternative Scoring. Create an incremental spiral.
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