|
Search: id:A007274
|
|
|
| A007274 |
|
Expansion for generalized walks on hexagonal lattice.
(Formerly M4222)
|
|
+0
1
|
|
| 1, 6, 36, 216, 1260, 7206, 40650, 227256, 1262832, 6983730, 38470220, 211220800, 1156490000, 6317095284, 34435495872
(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: A036162 A061708 A124535 this_sequence A126634 A007275 A000400
Adjacent sequences: A007271 A007272 A007273 this_sequence A007275 A007276 A007277
|
|
KEYWORD
|
nonn,walk
|
|
AUTHOR
|
Simon Plouffe (simon.plouffe(AT)gmail.com)
|
|
|
Search completed in 0.002 seconds
|
