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A005390 Number of Hamiltonian circuits on 2n X 6 rectangle.
(Formerly M5264)
1
1, 37, 1072, 32675, 1024028, 32463802, 1033917350, 32989068162, 1053349394128, 33643541208290, 1074685815276400, 34330607094625734, 1096704136430950646, 35034883701169366742, 1119214052513009716324, 35754123580486507079548 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..16.

Andre Poenitz, Some software

T. G. Schmalz, G. E. Hite and D. J. Klein, Compact self-avoiding circuits on two-dimensional lattices, J. Phys. A 17 (1984), 445-453.

FORMULA

a(n) = A145401(2*n). - Sean A. Irvine, Jun 11 2016

CROSSREFS

Sequence in context: A218764 A217454 A101631 * A253245 A168166 A168165

Adjacent sequences:  A005387 A005388 A005389 * A005391 A005392 A005393

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from André Pönitz (poenitz(AT)htwm.de), Jun 11 2003

STATUS

approved

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Last modified August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)