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COMMENTS
| Equivalence classes of invertible maps from {0,1}^n to {0,1}^n, under action of permutation of variables on domain and range. [Sean A. Irvine, 16 Mar 2011]
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REFERENCES
| M. A. Harrison, The number of classes of invertible Boolean functions, J. ACM 10 (1963), 25-28.
C. S. Lorens, Invertible Boolean functions, IEEE Trans. Electron. Computers, EC-13 (1964), 529-541.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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