The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I M3193 #23 Feb 22 2022 00:29:14
%S 0,4,0,16,32,156,608,2688,12064,55956,266656
%N Low-temperature series in exp(4J/kT) for antiferromagnetic susceptibility for the Ising model on square lattice.
%C Previous name was: Susceptibility series for square lattice.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H M. F. Sykes, D. G. Gaunt, P. D. Roberts and J. A. Wyles, <a href="https://doi.org/10.1088/0305-4470/5/5/004">High temperature series for the susceptibility of the Ising model, I. Two dimensional lattices</a>, J. Phys. A 5 (1972) 624-639.
%F a(n) = 4*A007215(n-2). - _Andrey Zabolotskiy_, Mar 03 2021
%Y Cf. A007215, A002915 (cubic), A002978 (honeycomb), A002927 (ferromagnetic).
%K nonn,nice,more
%O 1,2
%A _N. J. A. Sloane_
%E New name from _Andrey Zabolotskiy_, Mar 03 2021