2π⁢∫0π/2sin⁡z⁢sin⁡t⁢cos⁡(2⁢h⁢cos⁡z⁢cos⁡t)⁢se2⁢n+1⁡(t,h2)⁢ⅆ⁡t=B12⁢n+1⁡(h2)2⁢se2⁢n+1⁡(12⁢π,h2)⁢se2⁢n+1⁡(z,h2),