Write a function named catalan_up_to that takes a single argument and returns a list of the Catalan numbers {1,2,5,14,42,132,}{1,2,5,14,42,132,}, defined by the recursion relation

up through the largest Catalan number not greater . For example, calling catalan_up_to(20) with your function should return [1, 2, 5, 14].

Hint: Your function should first create a starter array, and then append to it in an iterative loop. (It is up to you whether the starter array is created empty or containing the first element.)

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