Spontaneous magnetization coefficients for square lattice spin 1 Ising model.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =-1a(5) =0a(6) =0a(7) =-4a(8) =3a(9) =0a(10) =-30a(11) =48a(12) =-52a(13) =-120a(14) =368a(15) =-612a(16) =-254a(17) =2524a(18) =-6216a(19) =4040a(20) =11805a(21) =-49400a(22) =68268a(23) =14928a(24) =-332511a(25) =734508a(26) =-568038a(27) =-1641320a(28) =6202774a(29) =-9239676