Numbers n such that (2^n+1)/3 is prime and can be written in the form a^2 + 3*b^2.

A216550

Numbers n such that (2^n+1)/3 is prime and can be written in the form a^2 + 3*b^2.

Terms

    a(0) =7a(1) =13a(2) =19a(3) =31a(4) =43a(5) =61a(6) =79a(7) =127a(8) =199a(9) =313a(10) =2617a(11) =10501a(12) =12391a(13) =14479a(14) =138937a(15) =141079a(16) =986191

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