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

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Last modified July 28 17:15 EDT 2021. Contains 346335 sequences. (Running on oeis4.)