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A007275 Expansion for generalized walks on hexagonal lattice.
(Formerly M4223)
+0
1
1, 6, 36, 216, 1296, 7776, 46440, 276054, 1633848, 9633366, 56616140, 331847200, 1940717000, 11327957196, 66010769382 (list; graph; listen)
OFFSET

0,2

COMMENT

The hexagonal lattice is the familiar 2-dimensional lattice in which each point has 6 neighbors. This is sometimes called the triangular lattice.

REFERENCES

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

A. J. Guttmann, C. Byrnes and N. E. Frankel, A generalized self-avoiding walk, J. Phys. A 17 (1984), L457-L461.

LINKS

G. Nebe and N. J. A. Sloane, Home page for hexagonal (or triangular) lattice A2

CROSSREFS

Sequence in context: A124535 A007274 A126634 this_sequence A000400 A097681 A050736

Adjacent sequences: A007272 A007273 A007274 this_sequence A007276 A007277 A007278

KEYWORD

nonn,walk

AUTHOR

Simon Plouffe (simon.plouffe(AT)gmail.com)

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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