Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 7*b^2.
A216535
Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 7*b^2.
Terms
- a(0) =3a(1) =13a(2) =17a(3) =29a(4) =47a(5) =83a(6) =131a(7) =431a(8) =433a(9) =449a(10) =509a(11) =4723a(12) =9311a(13) =9677a(14) =14431a(15) =35999a(16) =50833a(17) =81839a(18) =104911a(19) =201107a(20) =397379a(21) =931517a(22) =1803059a(23) =1968721
External references
- oeis: A216535