Low-temperature partition function expansion for hexagonal lattice (Potts model, q=3).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =2a(7) =0a(8) =0a(9) =0a(10) =6a(11) =6a(12) =-8a(13) =0a(14) =36a(15) =36a(16) =-42a(17) =-60a(18) =272a(19) =330a(20) =-402a(21) =-554a(22) =1758a(23) =3564a(24) =-3320a(25) =-7056a(26) =14616a(27) =33426a(28) =-21498a(29) =-83640