Spontaneous magnetization coefficients for square lattice spin 2 Ising model.

Terms

a(0) =2a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =-1a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =-4a(16) =3a(17) =0a(18) =0a(19) =0a(20) =0a(21) =0a(22) =-30a(23) =48a(24) =-19a(25) =0a(26) =0a(27) =0a(28) =-36a(29) =-136