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A216564
Numbers n such that the n-th Lucas number is prime, but cannot be written in the form a^2 + 2*b^2.
0
7, 19, 31, 79, 5851, 8467, 13963, 574219
OFFSET
1,1
CROSSREFS
Sequence in context: A141338 A237366 A216531 * A145042 A153892 A338410
KEYWORD
nonn
AUTHOR
V. Raman, Sep 08 2012
STATUS
approved