What is the domain of an arithmetic sequence?

The domain of an arithmetic sequence is all the natural numbers (1, 2, 3, 4, ...) or the set of positive integers. This is because an arithmetic sequence is a sequence of numbers where each term is obtained by adding a constant value (called the common difference) to the previous term. Since the common difference can be added indefinitely to each term, the sequence can continue indefinitely, making the domain infinite.

The domain of an arithmetic sequence is the set of natural numbers, i.e., {1, 2, 3, ...}.