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 A007734 Period of repeating digits of 1/n in base 3. 4
 1, 1, 1, 2, 4, 1, 6, 2, 1, 4, 5, 2, 3, 6, 4, 4, 16, 1, 18, 4, 6, 5, 11, 2, 20, 3, 1, 6, 28, 4, 30, 8, 5, 16, 12, 2, 18, 18, 3, 4, 8, 6, 42, 10, 4, 11, 23, 4, 42, 20, 16, 6, 52, 1, 20, 6, 18, 28, 29, 4, 10, 30, 6, 16, 12, 5, 22, 16, 11, 12, 35, 2, 12, 18, 20, 18, 30, 3, 78, 4, 1, 8, 41, 6, 16, 42 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS T. D. Noe, Table of n, a(n) for n=1..1000 MATHEMATICA f[n_] := MultiplicativeOrder[3, n/(3^IntegerExponent[n, 3])]; Array[f, 80] (* Robert G. Wilson v, Jun 10 2011 *) PROG (PARI) a(n)=znorder(Mod(3, n/3^valuation(n, 3))) \\ Charles R Greathouse IV, Jun 10 2011 CROSSREFS Sequence in context: A078886 A307796 A095247 * A171233 A096907 A249146 Adjacent sequences:  A007731 A007732 A007733 * A007735 A007736 A007737 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Hal Sampson (hals(AT)easynet.com) EXTENSIONS More terms from David W. Wilson STATUS approved

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Last modified October 14 16:48 EDT 2019. Contains 328022 sequences. (Running on oeis4.)