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A007231 Number of free subsets of multiplicative group of GF(3^n).
(Formerly M3835)

%I M3835

%S 1,5,13,52,121,455,1093,4305,9841,36905,88573,348728,797161,2989355,

%T 7174453,28585712,64570081,242137805,581130733,2288202262

%N Number of free subsets of multiplicative group of GF(3^n).

%D P. Bouchard and Y.-N. Yeh, Finding f-free subsets of maximal cardinality, Séries Formelles et Combinatoire Algébrique, 4th colloquium, 15-19 Juin 1992, Montréal, Université du Québec à Montréal, pp. 11-17.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%K nonn

%O 1,2

%A _Simon Plouffe_

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Last modified February 22 19:49 EST 2019. Contains 320403 sequences. (Running on oeis4.)