OFFSET

1,1

LINKS

M. E. Fisher and M. F. Sykes, Antiferromagnetic susceptibilities of the simple cubic and body-centered cubic Ising lattices, Physica, 28 (1962), 939-956.

S. McKenzie, Extended high-temperature series expansions for the spin-s Ising model, J. Phys. A: Math. Gen., 16 (1983), 2875-2880. See table 1, column c(n); divide by 2 to get a(n).

M. F. Sykes, J. L. Martin and D. L. Hunter, Specific heat of a three-dimensional Ising ferromagnet above the Curie temperature, Proc. Phys. Soc., 91 (1967), 671-677.

FORMULA

G.f. 6*v + 24*v^2 + 132*v^3 + 816*v^4 ... = v*q/2 + (1-v^2) * f'(v) / f(v), where f(v) = 1 + 8*v^3 + 33*v^4 + ... is the g.f. of A001407 and q = 12 is the number of nearest neighbors. - Andrey Zabolotskiy, Feb 14 2022

CROSSREFS

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(9)-a(11) from Sykes, Martin & Hunter added by Andrey Zabolotskiy, Feb 05 2022

Name clarified and a(12)-a(13) added by Andrey Zabolotskiy, Feb 14 2022

a(14) from McKenzie added by Andrey Zabolotskiy, Jan 18 2023

STATUS

approved