What's a good introduction to computational discrete math?

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I'm not looking for an intro to proofs book, I'm looking for a book that does for discrete math what e.g. Stewart's calculus books do for continuous math: a beginner-friendly, comprehensive introduction to basic computational techniques, with lots of exercises. Specifically, I want it to cover things like evaluating summations, solving recurrences, asymptotics, and working with the functions that come up a lot in discrete math (factorials, falling powers, binomial coefficients, etc). Also, I'm not looking for Knuth's Concrete Mathematics.