[Denvercoder9]

You have the right idea, but you got the formula wrong. That's evidenced in the source you link, but you can also reason it from first principles: a higher discount rate should make the cash stream less valuable, not more. The correct formula is n / d.

[Stasis5001]

Oops, that's what I get for mathing before coffee-- mixed up the formula for \sum (1+r)^n vs. \sum r^n