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A216562 Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 2*b^2. 0

%I

%S 0,4,5,11,13,16,17,37,41,47,53,61,71,113,313,353,503,613,617,863,1097,

%T 1361,4787,4793,7741,10691,12251,14449,19469,35449,36779,44507,51169,

%U 56003,81671,89849,94823,140057,148091,159521,183089,193201,202667,344293,387433,443609,532277,616787,631181,637751,651821,692147

%N Numbers n such that the n-th Lucas 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. A000032, A001606.

%K nonn

%O 1,2

%A _V. Raman_, Sep 08 2012

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Last modified August 1 03:05 EDT 2021. Contains 346379 sequences. (Running on oeis4.)