

A306281


Number of (undirected) Hamiltonian paths on the 6 X n knight graph.


3



0, 0, 0, 744, 18784, 3318960, 389969466, 24964893804, 1770631206422, 143827657320448, 10668015492137018
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OFFSET

1,4


LINKS

Table of n, a(n) for n=1..11.
Eric Weisstein's World of Mathematics, Hamiltonian Path
Eric Weisstein's World of Mathematics, Knight Graph


CROSSREFS

Cf. A169696 (3 X n), A079137 (4 X n), A083386 (5 X n), this sequence (6 X n), A306283 (7 X n), A308131 (n X n).
Sequence in context: A331674 A235252 A268891 * A210178 A192731 A288261
Adjacent sequences: A306278 A306279 A306280 * A306282 A306283 A306284


KEYWORD

nonn,more


AUTHOR

Seiichi Manyama, Feb 03 2019


EXTENSIONS

a(8)a(11) from Andrew Howroyd, Oct 14 2019


STATUS

approved



