login
Number of figure 8's having 2n edges in one loop and 6 edges in the other and which are weakly embeddable in the square lattice.
1

%I #4 Feb 09 2019 19:50:11

%S 2,8,64,288,1408,7248,39056

%N Number of figure 8's having 2n edges in one loop and 6 edges in the other and which are weakly embeddable in the square lattice.

%H S. G. Whittington and J. P. Valleau, <a href="https://doi.org/10.1088/0305-4470/3/1/003">Figure eights on the square lattice: enumeration and Monte Carlo estimation</a>, J. Phys. A 3 (1970), 21-27. See Table 1.

%Y Column 2 of triangle in A323852.

%K nonn,more

%O 2,1

%A _N. J. A. Sloane_, Feb 09 2019