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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
D. D. Sleator, R. E. Tarjan and W. P. Thurston, Rotation distance, in T. M. Cover and Gopinath, eds., Open Problems in Communication and Computation, Springer, NY 1987, pp. 130-137.
Sleator, Daniel D.; Tarjan, Robert E.; Thurston, William P. Rotation distance, triangulations and hyperbolic geometry. J. Amer. Math. Soc. 1 (1988), no. 3, 647-681.
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