A006142 Number of certain self-avoiding walks with n steps on square lattice (see reference for precise definition). (Formerly M4355)

0, 0, 0, 0, 0, 1, 0, 1, 7, 17, 30, 49, 124, 321, 761, 1721, 3815

Offset

4,9

References

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

Table of n, a(n) for n=4..20.

W. A. Beyer and M. B. Wells, Lower bound for the connective constant of a self-avoiding walk on a square lattice, J. Combin. Theory, A 13 (1972), 176-182, Table I.

Crossrefs

Cf. A002976.

Sequence in context: A294133 A088566 A059845 * A228345 A196167 A290402

Adjacent sequences: A006139 A006140 A006141 * A006143 A006144 A006145

Keyword

nonn,walk

Author

N. J. A. Sloane

Status

approved