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R. D. Schram, G. T. Barkema, R. H. Bisseling, Table of n, a(n) for n = 0..36
N. Clisby, R. Liang and G. Slade Self-avoiding walk enumeration via the lace expansion J. Phys. A: Math. Theor. vol. 40 (2007) p 10973-11017, Table A5 for n<=30.
S. R. Finch, Self-Avoiding-Walk Connective Constants
D. Randall, Counting in Lattices: Combinatorial Problems from Statistical Mechanics, PhD Thesis.
Raoul D. Schram, Gerard T. Barkema, Rob H. Bisseling, Exact enumeration of self-avoiding walks, Apr 12, 2011 [Jonathan Vos Post, Apr 13 2011]