equation icon  { [ ]2 n4- 2- g(n,e) = 32 Jn- 2(ne) - Jn -1(ne) + n Jn(ne) + Jn+1(ne) - Jn+2(ne) 4 } +(1 - e2) [Jn- 2(ne) - 2Jn(ne)+Jn+2(ne)]2 + ---[Jn(ne)]2 , 3n2 (41)