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 A105430 Numbers n such that reciprocal of n contains the reverse of n as a string of digits to the immediate right of the decimal point (excluding leading zeros). 0
 3, 61, 175, 571, 2414, 4142, 9011, 359772, 86249511, 535238681, 124396878308, 803878693421, 6126660122361, 13506262793047, 74039726260531, 76729882123723031, 655537561065645251, 882122044899263311 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS n for which 10^(2k-1)-n < n*reverse(n) <= 10^(2k-1), where k is the length of n. - Max Alekseyev, Apr 11 2005 LINKS EXAMPLE a(3)=175 because 1/175 = 0.005714285... MATHEMATICA fQ[n_] := Block[{lg = Floor[ Log[10, n] + 1]}, IntegerDigits[n] == Reverse[ Take[ RealDigits[1/n, 10, 24][[1]], lg]]]; lst = {}; Do[ If[ fQ[n], AppendTo[lst, n]], {n, 2, 10^7}]; lst (* Robert G. Wilson v, Apr 09 2005 *) CROSSREFS Cf. A074841, A105429. Sequence in context: A106883 A037209 A181505 * A141979 A185831 A301666 Adjacent sequences:  A105427 A105428 A105429 * A105431 A105432 A105433 KEYWORD nonn,base AUTHOR Gil Broussar (kikiriki(AT)mindspring.com), Apr 08 2005 EXTENSIONS More terms from Max Alekseyev, Apr 11 2005 Further terms from Max Alekseyev, Apr 29 2005 STATUS approved

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Last modified September 28 05:33 EDT 2020. Contains 337392 sequences. (Running on oeis4.)