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The sum of the progression (pa^2+qa+r))

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The sum of 2th to 5th number in arithmetic progression whose recurrence relation is 2a^2 + 3a + 1

2th number: 15

5th number: 66

The sum of 2th to 5th: 154

nthValue
16
215
328
445
566
691
7120
8153
9190
10231
11276
12325
13378
14435
15496
16561
17630
18703
19780
20861

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