A308139 Number of (undirected) Hamiltonian paths on the n X n queen graph.

0, 12, 22928, 10221735256, 1881495851872220832

Offset

1,2

Links

Table of n, a(n) for n=1..5.

Eric Weisstein's World of Mathematics, Hamiltonian Path

Eric Weisstein's World of Mathematics, Queen Graph

Formula

a(n) = A158664(n)/2.

Crossrefs

Cf. A158664.

Sequence in context: A013750 A127395 A076807 * A220791 A146519 A277693

Adjacent sequences: A308136 A308137 A308138 * A308140 A308141 A308142

Keyword

nonn,more,hard

Author

Eric W. Weisstein, May 14 2019

Status

approved