(* Created with the Wolfram Language : www.wolfram.com *)
((-5*Subscript[n, 4])/(2*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*
    Subscript[d, 6]*Subscript[d, 10]*Subscript[d, 11]*Subscript[d, 14]*
    Subscript[d, 15]*Subscript[d, 16]) + (80*Subscript[n, 4])/
   (9*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 9]*Subscript[d, 10]*
    Subscript[d, 11]*Subscript[d, 14]*Subscript[d, 19]) - 
  (80*Subscript[n, 7])/(9*Subscript[d, 4]*Subscript[d, 5]*Subscript[d, 7]*
    Subscript[d, 12]*Subscript[d, 15]*Subscript[d, 17]*Subscript[d, 20]) - 
  (5*Subscript[n, 7])/(2*Subscript[d, 2]*Subscript[d, 5]*Subscript[d, 6]*
    Subscript[d, 7]*Subscript[d, 10]*Subscript[d, 15]*Subscript[d, 16]*
    Subscript[d, 17]*Subscript[d, 20]) + (5*Subscript[n, 2]*Subscript[n, 7])/
   (Subscript[d, 2]*Subscript[d, 5]*Subscript[d, 7]*Subscript[d, 9]*
    Subscript[d, 10]*Subscript[d, 15]*Subscript[d, 17]*Subscript[d, 18]*
    Subscript[d, 20]) + (5*Subscript[n, 7]*Subscript[n, 8])/
   (Subscript[d, 3]*Subscript[d, 5]*Subscript[d, 6]*Subscript[d, 7]*
    Subscript[d, 12]*Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 17]*
    Subscript[d, 20]) + (40*Subscript[n, 9])/(9*Subscript[d, 2]*
    Subscript[d, 5]*Subscript[d, 6]*Subscript[d, 10]*Subscript[d, 14]*
    Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 22]) - 
  (40*Subscript[n, 7]*Subscript[n, 10])/(9*Subscript[d, 2]*Subscript[d, 5]*
    Subscript[d, 6]*Subscript[d, 7]*Subscript[d, 10]*Subscript[d, 14]*
    Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 17]*Subscript[d, 20]*
    Subscript[d, 21]) - (5*Subscript[n, 7]*Subscript[n, 11])/
   (2*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*Subscript[d, 6]*
    Subscript[d, 7]*Subscript[d, 10]*Subscript[d, 11]*Subscript[d, 14]*
    Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 17]*Subscript[d, 20]) - 
  (5*Subscript[n, 7]*Subscript[n, 13])/(2*Subscript[d, 2]*Subscript[d, 3]*
    Subscript[d, 5]*Subscript[d, 6]*Subscript[d, 7]*Subscript[d, 10]*
    Subscript[d, 11]*Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 17]*
    Subscript[d, 20]) - (5*Subscript[n, 4]*Subscript[n, 14])/
   (2*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*Subscript[d, 6]*
    Subscript[d, 8]*Subscript[d, 10]*Subscript[d, 11]*Subscript[d, 14]*
    Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 18]) - 
  (5*Subscript[n, 15])/(18*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*
    Subscript[d, 6]*Subscript[d, 10]*Subscript[d, 11]*Subscript[d, 13]*
    Subscript[d, 14]*Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 21]) - 
  (5*Subscript[n, 16])/(2*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*
    Subscript[d, 6]*Subscript[d, 10]*Subscript[d, 11]*Subscript[d, 13]*
    Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 20]) - 
  (5*Subscript[n, 17])/(2*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*
    Subscript[d, 6]*Subscript[d, 10]*Subscript[d, 11]*Subscript[d, 13]*
    Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 21]) - 
  (5*Subscript[n, 18])/(9*Subscript[d, 2]*Subscript[d, 5]*Subscript[d, 6]*
    Subscript[d, 10]*Subscript[d, 13]*Subscript[d, 14]*Subscript[d, 15]*
    Subscript[d, 16]*Subscript[d, 20]) - (5*Subscript[n, 18])/
   (2*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*Subscript[d, 6]*
    Subscript[d, 10]*Subscript[d, 11]*Subscript[d, 13]*Subscript[d, 14]*
    Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 20]) + 
  (10*Subscript[n, 19])/(Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 6]*
    Subscript[d, 9]*Subscript[d, 10]*Subscript[d, 12]*Subscript[d, 14]*
    Subscript[d, 16]*Subscript[d, 18]*Subscript[d, 21]) + 
  (5*Subscript[n, 20])/(2*Subscript[d, 2]*Subscript[d, 3]*Subscript[d, 5]*
    Subscript[d, 6]*Subscript[d, 8]*Subscript[d, 10]*Subscript[d, 11]*
    Subscript[d, 14]*Subscript[d, 15]*Subscript[d, 16]*Subscript[d, 18]*
    Subscript[d, 21]))/(512*Sqrt[6])
