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Help me get a recursive formula

What is the next term for the sequence 15, 26, 48, 92, 180

Get a recursive formula for it

asked Jul 27, 2017 in Algebra by Shaun

1 Answer

a1 = 15

an = 2an-1+4

2(180) - 4 = 360 -4 = 356

answered Jul 27, 2017 by quickwriter (2,510 points)
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