Numbers n such that (7^n + 4^n)/11 is prime.

A218373

Numbers n such that (7^n + 4^n)/11 is prime.

Terms

    a(0) =3a(1) =5a(2) =19a(3) =41a(4) =47a(5) =8231a(6) =33931a(7) =43781a(8) =50833a(9) =53719a(10) =67211

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