recursive limit

Level pending

Let {a$$_n$$ }be a sequence of numbers satisfying the relation ($$3$$ $$-$$ a$$_{n+1}$$)($$6$$ $$+$$ a$$_n$$) $$=$$ $$18$$ for all n greater than or equal to $$0$$ and a$$_o$$ $$=$$ $$3$$. Then

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