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A216558 Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 2*b^2. 0

%I #12 May 02 2013 13:11:26

%S 3,4,11,13,23,47,83,131,359,431,433,5387,9311,25561,30757,35999,37511,

%T 50833,81839,130021,148091,201107,397379,590041,593689,1285607,

%U 1636007,1803059,1968721

%N Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 2*b^2.

%H Blair Kelly, <a href="http://mersennus.net/fibonacci">Factorizations of Fibonacci and Lucas numbers</a>

%Y Cf. A000045, A001605.

%K nonn

%O 1,1

%A _V. Raman_, Sep 08 2012

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Last modified April 22 22:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)