SOLUTION: How do I set up the problem for this information: Generate the first 3 terms of a sequence that obey the following recursive rules: a0=4 an=an-1+2

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Question 1124668: How do I set up the problem for this information: Generate the first 3 terms of a sequence that obey the following recursive rules:
a0=4
an=an-1+2

Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
+a%5Bn%5D+=+a%5Bn-1%5D+%2B+2+ ; a%5B0%5D+=+4+
+a%5B1%5D+=+a%5B0%5D+%2B+2+=+4%2B2+=+6+
+a%5B2%5D+=+a%5B1%5D+%2B+2+=+6%2B2+=+8+
+a%5B3%5D+=+a%5B2%5D+%2B+2+=+8%2B2+=+10+

The closed form (which allows you to find the n-th term directly) is +a%5Bn%5D+=+2n%2B4+ ; n=0,1,2,3,…