The Tribonacci sequence is defined by T(n)=T(n−1)+T(n−2)+T(n−3)T(n) = T(n-1) + T(n-2) + T(n-3)T(n)=T(n−1)+T(n−2)+T(n−3) with T(0)=0T(0) = 0T(0)=0, T(1)=0T(1) = 0T(1)=0, and T(2)=1T(2) = 1T(2)=1. What is T(6)T(6)T(6)?
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