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The nth term of a sequence is (n + 1)(3n + 2).  What is the value of a_1 + a_2 + ... + a_{100}?

 Jul 4, 2022

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sumfor(n, 1, 100, (3*n^2 +5*n +2))==1,040,500

 Jul 4, 2022
 #1
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sumfor(n, 1, 100, (3*n^2 +5*n +2))==1,040,500

Guest Jul 4, 2022

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