Question: (In Python, preferably with comments so I understand what you're doing.) Exercise 2.7: Catalan numbers The Catalan numbers are a sequence of integers 1, 1,

(In Python, preferably with comments so I understand what you're doing.) Exercise 2.7: Catalan numbers The Catalan numbers are a sequence of integers 1, 1, 2, 5, 14, 42, 132... that play an important role in quantum mechanics and the theory of disordered systems. (They were central to Eugene Wigners proof of the so-called semicircle law.) They are given by 0=1,+1=4+2+2. Write a program that prints in increasing order all Catalan numbers less than or equal to one billion.

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