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REFERENCES
| B. Bunham and R. Fridshal, "The problem of simplifying logical expressions," Journal of Symbolic Logic, 24 (1959), 17-19.
M. M. Gadzhiev, Maximal length of the reduced disjunctive normal form for Boolean functions with five and six variables, Diskretnyi Analiz (Novosibirsk), (1971), 3-24 [ Computing Reviews #23,815, Sep. 1972 ].
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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