Akm = {{0, 0, (1/5)*(Ea1p + (2)*(Eep + Eepp))} , 
       {2, 0, Ea1p + (-2)*(Eep) + Eepp} , 
       {4, 0, (3/5)*((3)*(Ea1p) + Eep + (-4)*(Eepp))} }