OFFSET
2,1
LINKS
S. G. Whittington and J. P. Valleau, Figure eights on the square lattice: enumeration and Monte Carlo estimation, J. Phys. A 3 (1970), 21-27. See Table 1.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Feb 09 2019
STATUS
approved