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The numbers of n step selfavoiding returns to the origin are given up to n=14 for the face-centred cubic lattice, n=16 for the body- centred cubic lattice, n=18 for the triangular lattice, n=20 for the simple cubic lattice and n=26 for the square lattice, inclusive. The technique used to obtain the data is described in outline.
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Sykes et al. (1972) studied this question.
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