Finding the first four terms of a sequence given a factorial

The video tutorial guides viewers through calculating the first four terms of a sequence using a given formula. It involves applying factorials and powers of two to derive each term step-by-step. The instructor explains each calculation process clearly, ensuring understanding of the mathematical operations involved.

Explain how A sub 3 is calculated and what the final value is.

What is the value of A sub 4 and what steps are taken to find it?