A216567 Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + b^2.

0, 7, 13, 19, 31, 37, 61, 79, 313, 613, 5851, 7741, 8467, 13963, 14449, 35449, 51169, 193201, 344293, 387433, 574219

Offset: 1

Author

V. Raman, Sep 08 2012

Keywords

• nonn

Links

• Blair Kelly, Factorizations of Fibonacci and Lucas numbers

Crossrefs

Cf. A000032, A001606.