Question 1148775
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I'm not sure what you mean by "the arithmetic sequence equation"....<br>
a1 = a1
a2 = a1+(2-1)d = a1+d
a3 = a1+(3-1)d = a1+2d
a4 = a1+(4-1)d = a1+3d
...<br>
There is a common difference of d between successive terms; that makes the sequence arithmetic....<br>
If that doesn't answer your question, re-post it, making it clear what you are looking for.<br>