H. Narumi et al., EXPRESSIONS FOR THE PERFECT MATCHING NUMBERS OF CUBIC L X M X N LATTICES AND THEIR ASYMPTOTIC VALUES, Journal of mathematical chemistry, 20(1-2), 1996, pp. 67-77
A general expression of the perfect matching number for the l x m x n
cubic lattice was conjectured and examined for infinitely large system
s. The asymptotic value of the square of the perfect matching number w
as calculated by numerical integration. The present treatment will giv
e a key to obtain the true analytic solution of the perfect matching n
umbers for the 3-dimensional lattices.