SOLUTION: write the explicit form of 2,5,10,17...

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Question 975029: write the explicit form of 2,5,10,17...
Answer by josgarithmetic(39618) About Me  (Show Source):
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Index n_______________Term
1_____________________2
2_____________________2+3=5
3_____________________2+3+5=10
4_____________________A[3]+7=17, 2+3+5+7
5_____________________A[4]+9=26, 2+3+5+7+9
6_____________________A[5]+11=37, 2+3+5+7+9+11

3+2(i-2) which requires i>1.

Each term is a summation but needs to have the summation happen for n>1.
2+ sum of 3%2B2%28i-2%29 as i goes from 2 to n.