High temperature expansion of -u/J in odd powers of v = tanh(J/kT), where u is energy per site of the spin-1/2 Ising model on square lattice with nearest-neighbor interaction J at temperature T.

A002908

High temperature expansion of -u/J in odd powers of v = tanh(J/kT), where u is energy per site of the spin-1/2 Ising model on square lattice with nearest-neighbor interaction J at temperature T.

Terms

    a(0) =2a(1) =4a(2) =8a(3) =24a(4) =84a(5) =328a(6) =1372a(7) =6024a(8) =27412a(9) =128228a(10) =613160a(11) =2985116a(12) =14751592a(13) =73825416a(14) =373488764a(15) =1907334616a(16) =9820757380a(17) =50934592820a(18) =265877371160

External references