Question: . Is the language {a^nb^(2n) a^n | n = 1, 2, 3, . . .} context-free? If yes, give a pushdown automaton that accepts it.

. Is the language {a^nb^(2n) a^n | n = 1, 2, 3, . . .} context-free? If yes, give a pushdown automaton that accepts it. If not, prove so.

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