A334325 Number of irreducible, unrooted, unoriented self-avoiding chains of length n for the square lattice.

2, 2, 4, 8, 20, 42, 100, 228, 540, 1278, 3088, 7436, 18176, 44436, 109536, 270726, 672400, 1674764, 4185888, 10488914, 26352252, 66354472, 167429028, 423270120, 1071908028, 2718939372, 6906918040, 17569856618, 44751600732, 114121225984, 291346481204, 744569863528

Offset: 1

Author

Michel Marcus, Apr 23 2020

Keywords

• nonn

Links

• Nathan Clisby, Endless self-avoiding walks, arXiv:1302.2796 [cond-mat.stat-mech], 2013. See Table 2 column d_n p. 22.

Crossrefs

Cf. A334322, A334323, A334324.