Which number is missing from the fact family? 4,6,10,16

Note that 6 is 4 plus 2,

10 is 6 plus 4, or 6 plus 2^2

16 is 10 plus 6

Given the first term, 4, we find the second term by adding 2 to 4, obtaining 6.

Given the 2nd term, 6, we find the third term by adding 4 to 6, obtaining 10.

Given the 3rd term, 10, we find the fourth term by adding 6 to 10: 16

What's the next term? Find the fifth term by adding 8 to 16: 24 (answer)