Ononot — For the recurrence an = 2a{n-1} - 2a{n-2} with a0=1, a1=1, w

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Recurrence Relationshard

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For the recurrence $a_n = 2a_{n-1} - 2a_{n-2}$ with $a_0=1, a_1=1$ , what is $a_2$ ?