The table cant be seen properly.
so I am typing it as follows..

the TABLE IS :-
(7 power a) Mod 15 m
(7 power 0) Mod 15 - 1
(7 power 1) Mod 15 - 7
(7 power 2) Mod 15 - 4
(7 power 3) Mod 15 - 13
(7 power 4) Mod 15 - 1
(7 power 5) Mod 15 - 7
(7 power 6) Mod 15 - 4
(7 power 7) Mod 15 - 13

Now,I hope u can understand what I mean.