am(h2)bm+1(h2)}-2h2+2sh-18(s2+1)-127h(s3+3s)-1212h2(5s4+34s2+9)-1217h3(33s5+410s3+405s)-1220h4(63s6+1260s4+2943s2+486)-1225h5(527s7+15617s5+69001s3+41607s)+.