A005401 Susceptibility for square lattice. (Formerly M3519)

4, 16, 64, 416, 4544, 23488, -207616, 4205056, 198295552, -2574439424, -112886362112, 3567419838464, 94446596145152, -5636771173998592

Offset

1,1

References

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

Table of n, a(n) for n=1..14.

G. A. Baker Jr., H. E. Gilbert, J. Eve, G. S. Rushbrooke, On the two-dimensional, spin-1/2 Heisenberg ferromagnetic models, Phys. Lett., 25A (1967), 207-209.

J. Oitmaa and E. Bornilla, High-temperature-series study of the spin-1/2 Heisenberg ferromagnet, Phys. Rev. B, 53 (1996), 14228. See Table I and the note added in proof.

Crossrefs

Cf. A005399 (hexagonal), A002170 (cubic); A005402 (specific heat).

Sequence in context: A158778 A227313 A155518 * A002923 A345365 A013149

Adjacent sequences: A005398 A005399 A005400 * A005402 A005403 A005404

Keyword

sign

Author

N. J. A. Sloane

Extensions

Terms a(11)-a(14) added from Oitmaa and Bornilla by Andrey Zabolotskiy, Oct 20 2021 and Feb 05 2022

Status

approved