A234632 Numbers of directed Hamiltonian paths in the n X n black bishop graph.

2, 8, 192, 50752, 64264704, 2591115982336, 458135084510273536, 5255224440224669298917376

Offset

2,1

Links

Table of n, a(n) for n=2..9.

Eric Weisstein's World of Mathematics, Bishop Graph

Eric Weisstein's World of Mathematics, Black Bishop Graph

Eric Weisstein's World of Mathematics, Hamiltonian Path

Formula

a(n) = 2*A307934(n). - Pontus von Brömssen, Sep 13 2025

Crossrefs

Cf. A234637, A096970, A307934.

Sequence in context: A028368 A056990 A234637 * A070235 A057194 A105232

Adjacent sequences: A234629 A234630 A234631 * A234633 A234634 A234635

Keyword

nonn,more

Author

Eric W. Weisstein, Dec 28 2013

Extensions

a(3) prepended and a(8)-a(9) from Andrew Howroyd, Feb 21 2016

a(2) prepended by Eric W. Weisstein, Nov 16 2016

Status

approved