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 A103810 Primes from merging of 4 successive digits in decimal expansion of the Golden Ratio, (1+sqrt(5))/2. 24
 9887, 6563, 8117, 7207, 9391, 3911, 8807, 8689, 2663, 5443, 3389, 5939, 6131, 1319, 2087, 6689, 2221, 6269, 2963, 9631, 1361, 2203, 4547, 9241, 3449, 8467, 7433, 4339, 4877, 7499, 9887, 4007, 6521, 7057, 7517, 5179, 7883, 7589, 7621, 6217, 1117, 1777 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Leading zeros are not permitted, so each term is 4 digits in length. - Harvey P. Dale, Oct 23 2011 REFERENCES Mohammad K. Azarian, Problem 123, Missouri Journal of Mathematical Sciences, Vol. 10, No. 3, Fall 1998, p. 176. Solution published in Vol. 12, No. 1, Winter 2000, pp. 61-62. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 The Golden Ratio as explained at MathWorld.com Expansion of the Golden Ratio done to 20,000 digits as part of project Gutenberg. MATHEMATICA With[{len=4}, FromDigits/@Select[Partition[RealDigits[GoldenRatio, 10, 1000][[1]], len, 1], PrimeQ[FromDigits[#]] && IntegerLength[ FromDigits[#]] == len&]] (* Harvey P. Dale, Oct 23 2011 *) CROSSREFS Sequence in context: A208646 A001230 A238076 * A277944 A237917 A205612 Adjacent sequences:  A103807 A103808 A103809 * A103811 A103812 A103813 KEYWORD nonn,base AUTHOR Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005 EXTENSIONS Offset changed from 0 to 1 by Vincenzo Librandi, Apr 22 2013 STATUS approved

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Last modified May 31 00:53 EDT 2020. Contains 334747 sequences. (Running on oeis4.)