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%I #12 May 02 2013 13:10:54
%S 7,19,31,79,5851,8467,13963,574219
%N Numbers n such that the n-th Lucas number is prime, but cannot 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 1,1
%A _V. Raman_, Sep 08 2012
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