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 A146360 Primes p such that continued fraction of (1 + sqrt(p))/2 has period 15: primes in A146338. 37
 193, 281, 1861, 1933, 2089, 2141, 2437, 2741, 2837, 3037, 3121, 3413, 4001, 4637, 4877, 5821, 6653, 7673, 8117, 10069, 10273, 10457, 11197, 11549, 11821, 12409, 13037, 14653, 15061, 15077, 18661, 20549, 22921, 23117, 24169, 25621, 28837, 35597, 35869, 36389, 38569 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Amiram Eldar, Table of n, a(n) for n = 1..2000 MAPLE A146326 := proc(n) if not issqr(n) then numtheory[cfrac]( (1+sqrt(n))/2, 'periodic', 'quotients') ; nops(%[2]) ; else 0 ; fi; end: isA146360 := proc(n) RETURN(isprime(n) and A146326(n) = 15) ; end: for n from 2 to 30000 do if isA146360(n) then printf("%d, \n", n) ; fi; od: # R. J. Mathar, Sep 06 2009 MATHEMATICA Select[Prime[Range[1500]], Length[ContinuedFraction[(Sqrt[#]+1)/2][[2]]] == 15&] (* Harvey P. Dale, Aug 16 2014 *) CROSSREFS Cf. A000290, A050950-A050969, A078370, A146326-A146345, A146348-A146360. Sequence in context: A020352 A146338 A201858 * A050964 A015988 A260539 Adjacent sequences:  A146357 A146358 A146359 * A146361 A146362 A146363 KEYWORD nonn AUTHOR Artur Jasinski, Oct 30 2008 EXTENSIONS 8539 removed by R. J. Mathar, Sep 06 2009 More terms from Amiram Eldar, Mar 30 2020 STATUS approved

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Last modified July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)