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I'm having trouble writing the statement of $L_n = \alpha^n + \beta^n \forall n\geq 1$

$$\sum_{i=1}^n L_n = \alpha^n + \beta^n$$

Any ideas?

  • 5
    As the question stands, it is not making any sense. Please edit your question to clarify.2012-02-05

2 Answers 2