The general term for an arithmetic sequence is given by
a_n = a_1 + (n - 1) x d
Where "a_1" represents the first term, and "d" represents the common difference.
From the question, we get the following information:
a_1 = 6
d = 8
For this sequence, we get the following general term
a_n = 6 + (n - 1) x 8 = 8n - 2
Now, we just make a substituition for any given "n"
a_46 = 8 x 46 - 2 = 366
a_146 = 1166
a_246 = 1966