OFFSET
2,2
COMMENTS
a(5) is also the number of directed Hamiltonian cycles in the 2-Keller graph. - Eric W. Weisstein, Mar 21 2018
LINKS
Eric Weisstein's World of Mathematics, Folded Cube Graph
Eric Weisstein's World of Mathematics, Hamiltonian Cycle
Eric Weisstein's World of Mathematics, Keller Graph
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Eric W. Weisstein, Jan 17 2017
STATUS
approved