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A014524 Number of Hamiltonian paths in a 4 X 2n grid. 0
0, 1, 8, 47, 264, 1480, 8305, 46616, 261663, 1468752, 8244304, 46276385, 259755560, 1458042831, 8184190168, 45938958232, 257861540369, 1447411446840, 8124514782015, 45603992276896, 255981331487648 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

REFERENCES

K. L. Collins and L. B. Krompart, The number of Hamiltonian paths in a rectangular grid, Discrete Math. 169 (1997), 29-38.

FORMULA

The reference gives a generating function.

CROSSREFS

Sequence in context: A016198 A177257 A051140 * A054488 A034349 A024108

Adjacent sequences:  A014521 A014522 A014523 * A014525 A014526 A014527

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 14 23:16 EST 2012. Contains 205687 sequences.