A_K6_3 :=
(M^1510)*(-1*M^26)
+ (L^1*M^1454)*(-1*M^24)
+ (L^2*M^1398)*(3*M^20 - 8*M^22 + 18*M^24)
+ (L^3*M^1342)*(2*M^18 - 5*M^20 + 15*M^22 + 1*M^24)
+ (L^4*M^1286)*(-3*M^14 + 18*M^16 - 67*M^18 + 111*M^20 - 132*M^22 
    - 5*M^24)
+ (L^5*M^1230)*(-1*M^12 + 5*M^14 - 24*M^16 + 41*M^18 - 82*M^20 
    - 11*M^22 - 10*M^24 + 5*M^26 - 1*M^28)
+ (L^6*M^1174)*(1*M^8 - 10*M^10 + 56*M^12 - 181*M^14 + 414*M^16 
    - 523*M^18 + 458*M^20 + 67*M^22 + 5*M^24 - 1*M^26)
+ (L^7*M^1118)*(1*M^8 - 7*M^10 + 32*M^12 - 55*M^14 + 104*M^16 
    + 2*M^18 + 215*M^20 + 2*M^22 - 12*M^24 + 4*M^26)
+ (L^8*M^1062)*(1*M^8 - 25*M^10 + 122*M^12 - 388*M^14 + 452*M^16 
    - 388*M^18 - 487*M^20 + 1*M^22 - 4*M^24 + 1*M^26)
+ (L^9*M^1006)*(-2*M^8 + 2*M^10 - 56*M^12 + 74*M^14 - 406*M^16 
    - 110*M^18 - 314*M^20 + 134*M^22 - 41*M^24 + 4*M^26)
+ (L^10*M^950)*(-4*M^6 + 50*M^8 - 238*M^10 + 742*M^12 - 994*M^14 
    + 1064*M^16 + 358*M^18 + 341*M^20 - 34*M^22 + 2*M^24)
+ (L^11*M^894)*(-3*M^6 + 33*M^8 - 68*M^10 + 252*M^12 + 84*M^14 
    + 826*M^16 + 165*M^18 - 54*M^20 + 61*M^22 - 9*M^24)
+ (L^12*M^838)*(-6*M^6 + 63*M^8 - 326*M^10 + 336*M^12 - 420*M^14 
    - 1106*M^16 - 120*M^18 - 162*M^20 + 28*M^22 - 3*M^24)
+ (L^13*M^782)*(3*M^6 - 54*M^8 + 48*M^10 - 672*M^12 - 378*M^14 
    - 960*M^16 + 588*M^18 - 360*M^20 + 75*M^22 - 6*M^24)
+ (L^14*M^726)*(6*M^4 - 75*M^6 + 360*M^8 - 588*M^10 + 960*M^12 
    + 378*M^14 + 672*M^16 - 48*M^18 + 54*M^20 - 3*M^22)
+ (L^15*M^670)*(3*M^4 - 28*M^6 + 162*M^8 + 120*M^10 + 1106*M^12 
    + 420*M^14 - 336*M^16 + 326*M^18 - 63*M^20 + 6*M^22)
+ (L^16*M^614)*(9*M^4 - 61*M^6 + 54*M^8 - 165*M^10 - 826*M^12 
    - 84*M^14 - 252*M^16 + 68*M^18 - 33*M^20 + 3*M^22)
+ (L^17*M^558)*(-2*M^4 + 34*M^6 - 341*M^8 - 358*M^10 - 1064*M^12 
    + 994*M^14 - 742*M^16 + 238*M^18 - 50*M^20 + 4*M^22)
+ (L^18*M^502)*(-4*M^2 + 41*M^4 - 134*M^6 + 314*M^8 + 110*M^10 
    + 406*M^12 - 74*M^14 + 56*M^16 - 2*M^18 + 2*M^20)
+ (L^19*M^446)*(-1*M^2 + 4*M^4 - 1*M^6 + 487*M^8 + 388*M^10 
    - 452*M^12 + 388*M^14 - 122*M^16 + 25*M^18 - 1*M^20)
+ (L^20*M^390)*(-4*M^2 + 12*M^4 - 2*M^6 - 215*M^8 - 2*M^10 
    - 104*M^12 + 55*M^14 - 32*M^16 + 7*M^18 - 1*M^20)
+ (L^21*M^334)*(1*M^2 - 5*M^4 - 67*M^6 - 458*M^8 + 523*M^10 
    - 414*M^12 + 181*M^14 - 56*M^16 + 10*M^18 - 1*M^20)
+ (L^22*M^278)*(1 - 5*M^2 + 10*M^4 + 11*M^6 + 82*M^8 - 41*M^10 
    + 24*M^12 - 5*M^14 + 1*M^16)
+ (L^23*M^222)*(5*M^4 + 132*M^6 - 111*M^8 + 67*M^10 - 18*M^12 
    + 3*M^14)
+ (L^24*M^166)*(-1*M^4 - 15*M^6 + 5*M^8 - 2*M^10)
+ (L^25*M^110)*(-18*M^4 + 8*M^6 - 3*M^8)
+ (L^26*M^54)*(1*M^4)
+ (L^27*M^(-2))*(1*M^2);