(12⁢p-ℓ+12)⁢ξ⁢A2⁢ℓ-1+((2⁢ℓ+1)2-η)⁢A2⁢ℓ+1+(12⁢p+ℓ+32)⁢ξ⁢A2⁢ℓ+3=0,