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A216570
Numbers n such that the n-th Fibonacci number is prime, but cannot be written in the form a^2 + 6*b^2.
0
3, 4, 5, 7, 11, 13, 17, 29, 43, 83, 131, 137, 449, 509, 569, 571, 2971, 4723, 5387, 9677, 14431, 30757, 104911, 130021, 148091, 201107, 397379, 433781, 604711, 931517, 1049897, 1803059
OFFSET
1,1
CROSSREFS
Sequence in context: A227231 A107036 A001605 * A101762 A342752 A139455
KEYWORD
nonn
AUTHOR
V. Raman, Sep 08 2012
STATUS
approved