This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A047710 #11 Mar 03 2021 12:15:30 %S A047710 0,-4,8,36,-144,236,-328,580,-1088,1836,-3096,5668,-10736,20668,-40328 %N A047710 Low temperature series associated with square lattice. %H A047710 M. F. Sykes and M. E. Fisher, <a href="https://doi.org/10.1016/0031-8914(62)90080-0">Antiferromagnetic susceptibility of the plane square and honeycomb Ising lattices</a>, Physica, 28 (1962), 919-938. %F A047710 G.f.: (2*(1-y^2)*u(y^2) + 4*((2-y)^2*xi(y^2)-1)) / (1+y)^2, where u(x) is the g.f. of A002909 and xi(x) is the g.f. of A002979. - _Andrey Zabolotskiy_, Mar 03 2021 %Y A047710 Cf. A002909, A002979, A002907. %K A047710 sign,more %O A047710 1,2 %A A047710 _N. J. A. Sloane_