OFFSET
0,2
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
A. J. Guttmann, Lattice trails II: numerical results, J. Phys. A 22 (1989), 575-588.
CROSSREFS
KEYWORD
nonn,walk
AUTHOR
STATUS
approved