equation icon  1 (n + n + 1 + s- ie) zFn+n = (n-+-n-+-1)(2n-+-2n-+--1)Fn+n+1 + ------is-+-e------F (n + n)(n + n + 1) n+n (n + n- s + ie) + ---------------------Fn+n-1, (145) (n + n)(2n + 2n + 1) ' (n-+-n)(n-+-n-+-1-+-s---ie) F n+n = - (n + n + 1)(2n + 2n + 1) Fn+n+1 + ------is-+-e------F (n + n)(n + n + 1) n+n (n + n + 1)(n + n - s + ie) + ---------------------------Fn+n- 1, (146) (n + n)(2n + 2n + 1)