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A259856
Irreducible bridging trails on square lattice.
0
1, 1, 2, 2, 2, 4, 18, 48, 96, 194, 398, 992, 2614, 6496, 15512, 37536, 92366, 231544, 583442, 1464452, 3680362, 9310622
OFFSET
1,3
LINKS
A. J. Guttmann, Lattice trails II: numerical results, J. Phys. A 22 (1989), 575-588.
CROSSREFS
Sequence in context: A067920 A107902 A142974 * A375520 A279805 A123914
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jul 07 2015
STATUS
approved