• Brainly User
NO.   It is a geometric sequence. The sequence has a common ratio.

To find the common ratio:

16/4 = 4

64/4 = 4

256/4 = 4
Arithmetic sequence po yun.
Geometric po :-)
My mom is a math teacher.
Then, you should have asked your mom about this. And if time allows, please show your mom my solution. Again, the sequence is geometric, not arithmetic. Your mom is not the only Math teacher, I am, too.