Magnetic susceptibility coefficients for square lattice spin 1 Ising model.

Terms

a(0) =1a(1) =0a(2) =0a(3) =8a(4) =-6a(5) =0a(6) =90a(7) =-144a(8) =192a(9) =480a(10) =-1372a(11) =2676a(12) =1703a(13) =-11952a(14) =33316a(15) =-18900a(16) =-64201a(17) =304580a(18) =-401068a(19) =-97928a(20) =2390637a(21) =-5130048a(22) =4264858a(23) =13518716a(24) =-49117798a(25) =76725752a(26) =29308994a(27) =-381566684a(28) =915306452