102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219

is not +3+6+3+6 TRY it yourself

102 + 3 = 105

105 + 6 = 111
111 + 3 = 114
114 + 6 = 120
120 + 3 = 123
123 + 6 = 129
129 + 3 = 132