How do you write the first six terms of the sequence #a_n=n^2/(2n)#?
A question like this is a good introduction to the ideas of sequences.
The numbers of a sequence are called terms, how many terms there are, or which position a particular value occupies is given by "n".
"n" always starts as 1, then 2, 3, 4, ..
For the first term, n=1
For the second term, n = 2
For the third term, n=3.... and so on.
So to find the firs terms in a sequence if you the rule, just substitute, n by 1, 2, 3, 4, .....