Is the nth term in the sequence equal to the general term formula of the sequence?

Is the nth term in the sequence equal to the general term formula of the sequence?


Here n is just a code. Of course, the n-th term can be used to represent the general term. When it can be the m-th term, the k-th term and so on, it can also be represented by the n-1, M-1, K + 1 and so on



How much is 1 to 30? It's better to tell me a formula


(1+30)*30/2
=930/2
=465



Write a subtraction formula according to 8.27-3.56 = 4.71, fast
How do you write it?


8.27-4.71=3.56

Elden Ring Premiere

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