hey what i am doing is just to gain a litle more insight..(ie completely unnecessary)..
so when trying to find n^3 I noticed that the last odd term in the series
(n^2 + n -1) = A(n)
and from there I deduced the first term of the series as
(n^2 + n -1) -2( n - 1 )
n^2 -n + 1 = A(1)
then use the formula for summing the first "n" terms of an arithmetic sequence
S(n) = n / 2 ( A(1) + A(n) )
Like I said....Hooray for me
....... I know, haha...........just wanted to see if anyone else looked at it the same way?
As I said , this may seem trivial and silly, but for me it wasn't ....SO BACK OFF
....haha, I took that line from Billy Madison