Posted by **Kate** on Wednesday, May 2, 2012 at 11:27pm.

For the sequence 0,3,8,15,24,35....

find a formula for tsubn in terms of n.

- math -
**Steve**, Wednesday, May 2, 2012 at 11:50pm
the differences are 3,5,7,9,11

the sum of the first n odd numbers is n^2, so that gives us a clue

Tn = n^2 - 1

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