A number or the product of a number and a variable in an algebraic expression; a number in a sequence is a term?

Yes a number in a sequence is a term.

Step-by-step explanation:

Suppose we have three terms n+2 , n+4 and n+6  in the sequence .

These are treated as separate terms .

Suppose we have

n+ 2= 32

n+2-2= 32-2

n= 30

Again if we put

n+4=32

n+4-4= 32-4

n= 28

we get different values of n for the one solution given for all terms which shows that each term is different.

Now

if we have a different solution for each of them then

Putting the values

n+ 2= 32

n+2-2= 32-2

n= 30

Which shows n is constant but still the terms are different as each has a different value.

Hence the given number in a sequence is a different term.

and

n+4=34

n+4-4= 34-4

n= 30