4, 65, 5, 57, 6, 69, 7

4 , 4^2 = 16 , then reverse the number and add 4 ==== 61 + 4 =65

5 , 5^2=25 , then reverse the number and add 5 ===== 52 + 5 = 57

6 , 6^2=36 , then reverse the number and add 6 ======= 63 +6 = 69

7 , 7^2=49 , then reverse the number and add 7 ======= 94 + 7 === 101