Arithmetic sequence calculator

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The following arithmetic sequence calculator will help you determine the nth term and the sum of the first n terms of an arithmetic sequence.

First term of the sequence:     

Common sum or difference:    

                      Enter n:                 

                                                            an   Sn         

       

                                                  

Guidelines to use the calculator

If you select an, n is the nth term of the sequence

If you select Sn, n is the first n term of the sequence

For more information on how to find the common difference or sum, see this lesson arithmetic sequence

Geometric sequence calculator