3,1
Eric Weisstein's World of Mathematics, Hamiltonian Path
Eric Weisstein's World of Mathematics, Moebius Ladder
Sequence in context: A157336 A060661 A050495 * A173728 A173547 A173727
Adjacent sequences: A137880 A137881 A137882 * A137884 A137885 A137886
nonn,more
E. W. Weisstein (eric(AT)weisstein.com), Feb 20, 2008