python3 -c 'import math x=[3,0,-1,0,-1] for m in range(1,6): e=[math.sqrt(1/3)*math.sin(j*m*math.pi/6) for j in range(1,6)] print(m,sum(x[j]*e[j] for j in range(5)),2*math.sin(m*math.pi/12))'