Sequence rule:
an = (an-1)2 + 5
a1 = 4
Then:
a1 = 4
a2 = (4)2 + 5 = 16 + 5 = 21
a3 = (21)2 + 5 = 441 + 5 = 446
a4 = (446)2 + 5 = 198916 + 5 = 198921
a4 = 198,921
Joseph J.
asked • 03/16/21if a1 = 4 and an = (an-1) ^2 + 5 then find the value of a4
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