arithmetic progression
Sequence of numbers or terms that have a common difference between any one term and the next in the sequence. For example, 2, 7, 12, 17, 22, 27, ... is an arithmetic sequence with a common difference of 5.
The nth term in any arithmetic progression can be found using the formula:
where a is the first term and d is the common difference.
An arithmetic series is the sum of the terms in an arithmetic sequence. The sum S of n terms is given by:
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