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D. S. Gaunt, J. L. Martin , , G. Ord, G. M. Torrie, and S. G. Whittington, <a href="httphttps://dx.doi.org/10.1088/0305-4470/13/5/037">Restricted valence site animals on the simple cubic lattice</a>, J. Phys. A: Math. Gen. 13 (1980) 1791-1797.
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a(n) is the number of fixed linear or snake polycubes of size n. - John Mason, Sep 27 20232024
D. S. Gaunt, J. L. Martin et al, G. Ord, G. M. Torrie, and S. G., Whittington, <a href="http://dx.doi.org/10.1088/0305-4470/13/5/037">Restricted valence site animals on the simple cubic lattice</a>, J. Phys. A: Math. Gen. 13 (1980) 1791-1797.
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D. S. Gaunt, J. L. Martin et al., <a href="http://dx.doi.org/10.1088/0305-4470/13/5/037">Restricted valence site animals on the simple cubic lattice</a>, J. Phys. A: Math. Gen. 13 (1980) 1791-1797.
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