|
| |
|
|
A006782
|
|
Number of polygons of length 4n on L-lattice.
(Formerly M1930)
|
|
0
| |
|
|
1, 0, 1, 2, 9, 36, 154, 684, 3128, 14666, 70258, 342766
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,4
|
|
|
REFERENCES
| I. G. Enting and A. J. Guttmann, Self-avoiding polygons on the square, L and Manhattan lattices, J. Phys. A 18 (1985), 1007-1017.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
CROSSREFS
| Sequence in context: A052834 A150967 A121769 * A150968 A073156 A150969
Adjacent sequences: A006779 A006780 A006781 * A006783 A006784 A006785
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
