This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A301369 #20 Jun 22 2024 13:43:08 %S A301369 3,107,197,2843,3571,4451,31517,44819 %N A301369 Numbers k such that (9^k + 7^k)/16 is prime. %C A301369 All terms are prime. %C A301369 The corresponding primes are 67, 79401467172644850007356716446663549450843749853576087044440771380676673442288169290888310265443988907, ... %p A301369 select(n->isprime((9^n+7^n)/16),[seq(n,n=1..10000,2)]); # _Muniru A Asiru_, Mar 27 2018 %t A301369 Select[Range[1, 10000], PrimeQ[(9^n+7^n)/16] &] %o A301369 (PARI) forprime(n=3, 10000, if(isprime((9^n+7^n)/16), print1(n, ", "))) %o A301369 (Magma) [n: n in [1..10000] |IsPrime((9^n+7^n)/16)] %Y A301369 Cf. A057175, A125956, A211409, A128339, A187819. %K A301369 nonn,more,hard %O A301369 1,1 %A A301369 _Tim Johannes Ohrtmann_, Mar 19 2018 %E A301369 a(7) from _Michael S. Branicky_, Apr 29 2023 %E A301369 a(8) from _Michael S. Branicky_, Jun 22 2024