|
| |
|
|
A006779
|
|
Number of n-step spirals on cubic lattice.
(Formerly M4121)
|
|
0
| |
|
|
1, 6, 18, 54, 150, 426, 1158, 3204, 8682, 23724, 64194, 174378, 470856, 1274430, 3434826, 9272346, 24953004, 67230288, 180705126, 486152604, 1305430884
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
REFERENCES
| A. J. Guttmann and K. J. Wallace, On three-dimensional spiral anisotropic self-avoiding walks, J. Phys. A 18 (1985), L1049-L1054.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
G. Szekeres and A. J. Guttmann, Spiral self-avoiding walks on the triangular lattice, J. Phys. A 20 (1987), 481-493.
|
|
|
CROSSREFS
| Sequence in context: A001216 A079843 A076941 * A003208 A174313 A002933
Adjacent sequences: A006776 A006777 A006778 * A006780 A006781 A006782
|
|
|
KEYWORD
| nonn,walk
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
