Final answer:
The initial term of a sequence is the value of the sequence at the start or the beginning, denoted by the subscript 0.
Step-by-step explanation:
The initial term of a sequence is denoted by the subscript 0. It represents the value of the sequence at the start or the beginning. For example, if we have a sequence defined as {2, 5, 8, 11, ...}, the initial term or the zero term would be 2.