Numbers n such that the n-th Fibonacci number is prime, but cannot be written in the form a^2 + 3*b^2.

A216553

Numbers n such that the n-th Fibonacci number is prime, but cannot be written in the form a^2 + 3*b^2.

Terms

    a(0) =3a(1) =5a(2) =11a(3) =13a(4) =29a(5) =43a(6) =83a(7) =131a(8) =509a(9) =571a(10) =2971a(11) =4723a(12) =5387a(13) =9677a(14) =30757a(15) =130021a(16) =148091a(17) =201107a(18) =397379a(19) =433781a(20) =931517a(21) =1803059

External references