Susceptibility series H_4 for 2-dimensional Ising model (divided by 2).

Terms

a(0) =1a(1) =16a(2) =90a(3) =328a(4) =888a(5) =2016a(6) =3994a(7) =7212a(8) =12070a(9) =19112a(10) =28846a(11) =41976a(12) =59116a(13) =81132a(14) =108738a(15) =142972a(16) =184638a(17) =234952a(18) =294806a(19) =365596a(20) =448296a(21) =544492a(22) =655230a(23) =782292a(24) =926794a(25) =1090716a(26) =1275238a(27) =1482548a(28) =1713880a(29) =1971636