|
Search: id:A055919
|
|
|
| A055919 |
|
Number of directed site animals on a hexagonal lattice with n sites. |
|
+0
2
|
|
| 2, 4, 10, 24, 60, 152, 402, 1094, 3012, 8232, 22086
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
A. J. Guttmann, Indicators of solvability for lattice models, Discrete Math., 217 (2000), 167-189.
A. J. Guttmann and A. R. Conway, Hexagonal lattice directed site animals, Statistical Physics on the Eve of the Twenty-First Century, ed. M. T. Batchelor, World Scientific, 1999.
|
|
CROSSREFS
|
Row sums of A055907.
Sequence in context: A052987 A100087 A088354 this_sequence A006575 A138175 A121691
Adjacent sequences: A055916 A055917 A055918 this_sequence A055920 A055921 A055922
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
Christian G. Bower (bowerc(AT)usa.net), Jun 22 2000
|
|
|
Search completed in 0.002 seconds
|
