In fact, it is a two-step thing.

Because there is ((2 2-2) 3-3 ...) n > n when n >; Two o'clock direction

The answer is straightforward.

so 2 = a 1 >； .....

Reverse calculation

Thinking: 2 & gtsqe(2+(3sqe(3+ (......)).

2^2-2>； 3sqe(3+(4sqe(4+(.......)

(2 2-2) 3-3 = ... (dispensable)

Please feel free to ask questions.

If not, please adopt it! ! ! ! ! ! ! !