A146357 Primes p such that continued fraction of (1 + sqrt(p))/2 has period 12 : primes in A146336.

103, 127, 239, 263, 479, 887, 1567, 2711, 5743, 5903, 8311, 8447, 10567, 10847, 12391, 14783, 14831, 15887, 18191, 22343, 23447, 28151, 31391, 32359, 40087, 40343, 42703, 53407, 60103, 60623, 64231, 75431, 79943, 81559, 83663, 93503, 114167, 130199, 135119, 141863

Offset: 1

Author

Artur Jasinski, Oct 30 2008

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A000290, A050950-A050969, A078370, A146326-A146345, A146348-A146360.

Programs

Mathematica

Select[Prime[Range[10000]],Length[ContinuedFraction[(1+Sqrt[#])/2][[2]]] == 12&] (* Harvey P. Dale, May 18 2017 *)

Extensions

Period length in definition corrected, 103 added, 607 and 2063 removed. - R. J. Mathar, Nov 08 2008

More terms from Amiram Eldar, Mar 30 2020