What is the nth term of 3 11 19 27?

Answer 1

each time the number increases by 8 and the original number was 3.

This means that nth term = 3+(n-1)8

ie. the fourth term 27 would be 3 + (4-1)x8 = 3+24 = 27

Answer 2

Well, darling, the nth term of this sequence is n^2 + 2. So, if you plug in n=1, you get 3, n=2 gives you 11, n=3 spits out 19, and n=4 pops up with 27. Simple as that, sugar.