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 A064561 Reciprocal of n terminates with an infinite repetition of digit 2. Multiples of 10 are omitted. 8
 45, 288, 18432, 703125, 1179648, 75497472, 4831838208, 10986328125, 309237645312, 19791209299968, 171661376953125, 1266637395197952, 81064793292668928, 2682209014892578125, 5188146770730811392 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 REFERENCES A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 73-82. LINKS Robert Israel, Table of n, a(n) for n = 1..787 Index entries for sequences related to decimal expansion of 1/n FORMULA Numbers of the form 9*2^(6i-1) and 9*5^(6i-5) [i>0]. EXAMPLE 1/1179648 = 0.000000847710503472222222222... MAPLE sort([seq(9*2^(6*i-1), i=1 .. floor((1+log[2](10^20/9))/6)), seq(9*5^(6*i-5), i=1 .. floor((5+log[5](10^20/9))/6))]); # Robert Israel, May 03 2021 PROG (ARIBAS): a064560(1, 300000000, 2, 36). For definition of a064560 see A064560. CROSSREFS Cf. A064560, A064562, A064563, A064564, A064565, A064566, A064567. Sequence in context: A178540 A351534 A296326 * A291177 A341568 A093761 Adjacent sequences: A064558 A064559 A064560 * A064562 A064563 A064564 KEYWORD nonn,base AUTHOR Patrick De Geest, Sep 20 2001 EXTENSIONS One more term from Klaus Brockhaus, Sep 22 2001 More terms from James A. Sellers, Sep 28 2001 STATUS approved

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Last modified June 20 11:12 EDT 2024. Contains 373527 sequences. (Running on oeis4.)