A269561 - OEIS

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A269561

Number of (undirected) Hamiltonian cycles in the n X n rook graph K_n X K_n.

4

1, 48, 284112, 335750676480, 112249362914249932800, 14994936423694913432308324761600

(list; graph; refs; listen; history; text; internal format)

OFFSET

2,2

LINKS

Table of n, a(n) for n=2..7.

Eric Weisstein's World of Mathematics, Hamiltonian Cycle

Eric Weisstein's World of Mathematics, Rook Graph

CROSSREFS

Cf. A269562, A096970, A003763, A222199.

Sequence in context: A282596 A272262 A146204 * A079234 A051235 A282403

Adjacent sequences: A269558 A269559 A269560 * A269562 A269563 A269564

KEYWORD

nonn,more

AUTHOR

Andrew Howroyd, Feb 29 2016

EXTENSIONS

Name adjusted by Eric W. Weisstein, May 06 2019

STATUS

approved