Substitute n=1



Substitute n=2



Substitute n=3



As you see,  represents the "monotonous" sequence:

10, 10, 10, 10, ...

which can be considered as either:

1. arithmetic sequence with first term 10, and common difference 0.

or

2. a geometric sequence with first term 10, and common ratio = 1.

Anyway, like all other terms in this "monotonous", the 200th term is 10,
but so is the 199th, and the 201st, and the 999,999,999,999th.  :-)

Edwin