The general term of an arithmetic sequence can be written in terms of its first term a1, common difference d, and index n as follows: an=a1+(n−1)d. An arithmetic series is the sum of the terms of an arithmetic sequence.
A sequence of numbers where each successive number is the sum of the previous number and some constant d. ... The sum of the terms of an arithmetic sequence. The sum of the first n terms of an arithmetic sequence given by the formula: Sn=n(a1+an)2.
