Posted by **Nick** on Monday, June 24, 2013 at 2:00pm.

The sequence {an} satisfies a0=1,a1=213, and an=2an−1+an−2 for all n≥2. Let

S=∑i=1 to infinity a[i-1]/(a[i]^2-a[i-1]^2)

What is the value of 1/S?

- Math-algebra-Steve -
**Danny**, Monday, June 24, 2013 at 11:34pm
148

- Math-algebra-Steve -
**raja harishchandra**, Tuesday, June 25, 2013 at 5:36am
148 is incorrect

- Math-algebra-Steve -
**me**, Tuesday, June 25, 2013 at 11:35am
424

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