Fcm⁡(z,h)∼1+s8⁢h⁢cosh2⁡z+1211⁢h2⁢(s4+86⁢s2+105cosh4⁡z-s4+22⁢s2+57cosh2⁡z)+1214⁢h3⁢(-s5+14⁢s3+33⁢scosh2⁡z-2⁢s5+124⁢s3+1122⁢scosh4⁡z+3⁢s5+290⁢s3+1627⁢scosh6⁡z)+⋯,