Step 1 :\(a_1 = 7\)
Step 2 :\(a_n = a_{n-1} + 1 \)
Step 3 :\(a_6 = a_5 + 1\)
Step 4 :\(a_5 = a_4 + 1\)
Step 5 :\(a_4 = a_3 + 1\)
Step 6 :\(a_3 = a_2 + 1\)
Step 7 :\(a_2 = a_1 + 1\)
Step 8 :\(a_2 = 7+1 = 8\)
Step 9 :\(a_3 = 8+1 = 9\)
Step 10 :\(a_4 = 9+1 = 10\)
Step 11 :\(a_5 = 10+1 = 11\)
Step 12 :\(a_6 = 11+1 = 12\)