OFFSET
1,1
COMMENTS
The n X n square lattice with wrap around is also called the torus grid graph. - Andrew Howroyd, Jan 11 2018
REFERENCES
Steven R. Finch, Mathematical Constants, Cambridge, 2003, pp. 412-416.
Computed by Jennifer Henry in Dec. 1998.
LINKS
E. H. Lieb, Residual entropy of square ice, Phys. Rev. 162 (1967) 162-172.
Steven R. Finch, Lieb's Square Ice Constant [Broken link]
Steven R. Finch, Lieb's Square Ice Constant [From the Wayback machine]
Eric Weisstein's World of Mathematics, Torus Grid Graph
FORMULA
Elliot Lieb proved that lim_{n->oo} a(n)^(1/n^2) = (4/3)^(3/2). See A118273.
CROSSREFS
KEYWORD
nonn
AUTHOR
Steven Finch, Apr 25 2000
EXTENSIONS
a(14) from Brendan McKay, Apr 18 2024
STATUS
approved