SOLUTION: List the first 10 terms of each of these sequences the sequence whose nth term is the sum of the first n positive integers

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Question 1059348: List the first 10 terms of each of these sequences
the sequence whose nth term is the sum of the first n positive integers

Answer by ikleyn(52790) About Me  (Show Source):
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The sum of the first  n  positive integers is   S%28n%29 = %28n%2A%28n%2B1%29%29%2F2.

See the lessons
    - Arithmetic progressions
    - The proofs of the formulas for arithmetic progressions
    - Problems on arithmetic progressions
in this site.

First 10 values are

 n      S(n)
-----------
 1 	 1
 2	 3
 3	 6
 4	10
 5	15
 6	21
 7	28
 8	36
 9	45
10	55