1,0,1,0,1,0,1,0

4.0, 0.0, 0.0, 0.0, 4.0, 0.0, 0.0, 0.0

Frequency representation=
4.0cos(2pi/1)+
0.0cos(2pi/2)+
0.0cos(2pi/3)+
0.0cos(2pi/4)+
4.0cos(2pi/5)+
0.0cos(2pi/6)+
0.0cos(2pi/7)+
0.0cos(2pi/8)