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Home > PC > Chapter 8 > Lesson 8.2.5 > Problem 8-141

8-141.

an+1= an + 2n + 1
a1 = 1
a2 = 1+ 2(1) + 1 = 4
a3 = 4 + 2(2) + 1 = 9
a4 = 9 + 2(3) + 1 = 16
a5 = 16 + 2(4) + 1 = 25

an = n2