if you're looking for the rule, it's: they're all even squared numbers i.e. 2^2 = 4 , 4^4 = 16, etc. if you're looking for more numbers, three more are: 12^12 = 144, 14^14 = 196, 16^16 =256
this is a quadratic sequence. 16-4=12 and 36-16=20 20-12=8 there is a common difference of 8, so you add 12 to the first term to get the second term, that means you will add 8+12=20 to the second term to get the third term, then you will add 8+20=28 to the third term to get the fourth term, and so on... it's called a common difference. so 2nd term: 4+12=16 3rd term: 16+(8+12)=16+(20)=36 4th term: 36+(8+20)=36+(28)=64 5th term: 64+(8+28)=64+(36)=100
