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A007232
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Number of free subsets of multiplicative group of GF(5^n).
(Formerly M2077)
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1
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2, 15, 74, 409, 1951, 9765, 48827, 256347, 1220699, 6103515, 30517572, 160216158, 762939452, 3814697265, 19073486293, 101327896117, 476837158134
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OFFSET
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1,1
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COMMENTS
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Observe that a(4*n+2) = (5^(4*n+3) - 5)/8 for n = 0,1,2,3. Does this result hold for general n? - Peter Bala, Mar 22 2018
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REFERENCES
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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.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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