login
A259816
Total length of self-avoiding walks with n bonds on the square lattice with additional bridges of length 2.
0
4, 12, 64, 160, 676, 1732, 6440, 16688, 57620, 150580, 494776, 1301208, 4126100, 10903692, 33663256, 89287024, 269997636, 718153380, 2136075840, 5693969456, 16710504036, 44618212196
OFFSET
1,1
LINKS
A. J. Guttmann and Y. S. Yang, The shortest path of SAWs with bridges, Journal of Physics A: Mathematical and General 24.7 (1991): 1603-1609.
CROSSREFS
Sequence in context: A188328 A291772 A222645 * A353452 A071769 A221667
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 08 2015
STATUS
approved