"New algorithm for the computation of the partition function for the Ising model on a square lattice" by K.Malarz, M.S.Magdon-Maksymowicz, A.Z.Maksymowicz, B.Kawecka-Magiera and K.Kulakowski Int. J. Mod. Phys. C14 (2003) 689 Files open_bc_?x?.txt give information on numer Omega(n,k) of spin-lattice configuration with given number n of spins pointing up, and given number k of antiparallel spin pairs on ?x? large lattice. , Sat Jan 22 12:00:00 2005