To find the first four terms of the sequence defined by a1, a4, and a1 (which seems to suggest that a1 is repeated), we first need to clarify what the sequence actually looks like.
If we assume that an refers to a sequence defined by a rule or a function, we need some form of definition or formula to generate the terms. However, from the given terms, it seems like there is a repetition or some confusion in notation.
For example, if we consider a simple arithmetic sequence where each term increases by a fixed number, we could define that:
- If a1 = 1, then each successive term could be increased by a constant like 1.
- This would give us: a1 = 1, a2 = 2, a3 = 3, a4 = 4.
So, based on the assumption we make about the sequence, if we take the first four terms to just be a consistent increase starting from 1, we can summarize it as:
- First term (a1): 1
- Second term (a2): 2
- Third term (a3): 3
- Fourth term (a4): 4
If your sequence follows a different rule or formula, please provide that for a more accurate answer.