A307934 Number of (undirected) Hamiltonian paths in the n X n black bishop graph.

0, 1, 4, 96, 25376, 32132352, 1295557991168, 229067542255136768, 2627612220112334649458688

Offset

1,3

Links

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Black Bishop Graph

Eric Weisstein's World of Mathematics, Hamiltonian Path

Formula

a(n) = A234632(n)/2 for n >= 2. - Pontus von Brömssen, Sep 13 2025

Crossrefs

Cf. A234632.

Sequence in context: A146514 A181335 A098695 * A059201 A323818 A027638

Adjacent sequences: A307931 A307932 A307933 * A307935 A307936 A307937

Keyword

nonn,hard,more

Author

Eric W. Weisstein, May 06 2019

Status

approved