OFFSET
1,1
COMMENTS
Number of Hamiltonian paths in the graph P_{n+1} X P_{n+1} starting at any of the n+1 vertices on one side of the graph and terminating at any of the n+1 vertices on the opposite side. - Andrew Howroyd, Apr 10 2016
LINKS
I. Jensen, Table of n, a(n) for n = 1..18 [from the Jensen link below]
I. Jensen, Series Expansions for Self-Avoiding Walks
I. Jensen, Spanning Hamiltonian walks
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 30 2006
STATUS
approved