f(4,0)*2**3  f(3,0)*2**2  f(2,0)*2**1  f(1,0)*2**0  f(0,0)*2**0
f(4,1)*2**2  f(3,1)*2**1  f(2,1)*2**0  f(1,1)*2**0
f(4,2)*2**1  f(3,2)*2**0  f(2,2)*2**0
f(4,3)*2**0  f(3,3)*2**0
f(4,4)*2**0