General term of a sequence?

These are the first four terms of a sequence:

1, 10, 28, 82

Find a general nth term that fits the sequence.

sepia2015-07-28T19:55:54Z

Favorite Answer

1, 10, 28, 82, ...
an = -2(13n - 11)/(n - 5)

Penelope Sanchej2014-06-02T19:31:45Z

3^n+1 Except the first term which is 1. Others fit.
10 = 3^2 + 1
28 = 3^3 + 1
82 = 3^4 + 1

Barry G2016-06-30T05:19:17Z

10=1+1*9
28=10+1*2*9
82=28+1*2*3*9

a(n+1) = a(n)+9n! with a(1)=1.

lol2015-07-01T01:05:49Z

can you check my questions pls ! I've got a mathematics exams in 3 days and i cant answer couple of questions :/ THANK YOU ** SORRY FOR POSTING OVER HERE

Maneshwar2014-11-29T23:09:51Z

9n-7 is the answer popé...