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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