Non-negative integers are the counting numbers with zero included: 0, 1, 2, 3, ... In computing this is the natural domain of array indices, iteration counters and sizes - you cannot have "-3 items" or a negative position in a list. Zero is the beginning, and every positive integer follows.
Generate Non-negative Integers lists a clean run of these values from any starting point at or above zero, up to 1000 terms. No negatives sneak in - by construction. Perfect for index practice, dataset rows and reproducible sequences.