Low-temperature specific heat expansion for square lattice (Potts model, q=4).

Terms

a(0) =48a(1) =0a(2) =216a(3) =588a(4) =-96a(5) =5832a(6) =4800a(7) =13068a(8) =115776a(9) =32448a(10) =664440a(11) =1736100a(12) =1757760a(13) =18387336a(14) =24467184a(15) =90326532a(16) =379958640a(17) =535402224a(18) =2924464488a(19) =7189478184a(20) =17099776512a(21) =73614120000a(22) =153395478288a(23) =528792612984