How to make an ordered list?

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I need to set any value, and this value should serve as the number of numbers in an ordered list, where in each position of the list there must be the cumulative sum of 1 to the position number

A tip on how to get help already, as I hit the net in search of a line of code to give me a light.

Example:

    
asked by anonymous 20.08.2016 / 02:41

0 answers