(Table[cos(a*b*2*pi/8), {a, 0,7}, {b,0,7}].{{0}, {0}, {8}, {-4}, {0}, {-4}, {8}, {0}} +Table[sin(a*b*2*pi/8), {a, 0,7}, {b,0,7}].{{0}, {0}, {0}, {1}, {0}, {-1}, {0}, {0}})/8