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 A103793 Primes from merging of 7 successive digits in decimal expansion of the Golden Ratio, (1+sqrt(5))/2. 31
 1618033, 8874989, 1798057, 7204189, 1893911, 1374847, 5386891, 2126633, 6222353, 6354433, 8322661, 1696207, 9631361, 1361443, 1344947, 9874339, 7499887, 6249407, 1210427, 6217711, 7111777, 8053153, 9914669, 8782289 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Leading zeros are not permitted, so each term is 7 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=7}, 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: A234410 A069374 A294776 * A064117 A173428 A015334 Adjacent sequences:  A103790 A103791 A103792 * A103794 A103795 A103796 KEYWORD nonn,base AUTHOR Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005 EXTENSIONS Broken URL to Project Gutenberg replaced by Georg Fischer, Jan 03 2009 Offset changed from 0 to 1 by Vincenzo Librandi, Apr 19 2013 STATUS approved

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Last modified August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)