id:A066849 - OEIS Search Results

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Consider sequence of fractions A066657/A066658 produced by ratios of terms in A066720; let m = smallest integer so that all fractions 1/n, 2/n, ..., (n-1)/n have appeared when we reach A066720(m) = k; sequence gives values of m; set a(n) = -1 if some fraction i/n never appears.

+0
4

1, 2, 3, 401, 113, 22, 75, 401, 1986, 6547, 1110, 5949, 7952, 2445, 5578, 172617, 2590, 1986, 17471, 41341, 13631, 20900, 14063, 121563, 86009, 17648, 392866, 140171, 59293, 257162, 68370, 172617, 226693, 89942, 489653, 151601, 153287, 231508, 860521, 999664, 479352, 751180, 475540, 1312350, 246470, 287004, 84285, 1137690, 363942, 86009, 276267, 603972, 219888, 1139722, 1525515, 5227193, 1486480, 206546, 379708, 1244626, 374003, 590152, 7230480, 1903679, 1834403 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`3/4 does not occur until we reach A066720(401) = 2436 and then we see A066720(320)/A066720(401) = 1827/2436 = 3/4. Therefore a(4) = 401.`
	CROSSREFS	`Cf. A066720, A066657, A066658. A066848 gives values of k.` `Sequence in context: A110931 A097654 A156986 this_sequence A071219 A109855 A128874` `Adjacent sequences: A066846 A066847 A066848 this_sequence A066850 A066851 A066852`
	KEYWORD	`nonn,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jan 21 2002`
	EXTENSIONS	`Corrected by John Layman, Feb 05 2002.` `Greatly extended by David Applegate (david(AT)research.att.com), Feb 13, 2002.`

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.

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