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 A165353 #12 Sep 08 2022 08:45:47 %S A165353 7,17,23,31,41,71,73,79,103,113,127,151,191,233,257,281,311,337,367, %T A165353 383,409,433,463,487,569,577,593,601,607,647,809,887,911,953,977,1039, %U A165353 1049,1087,1097,1153,1193,1201,1223,1279,1297,1321,1361,1399,1433,1481,1487 %N A165353 Primes p such that p+(p^2-1)/8 is a prime number. %H A165353 Vincenzo Librandi, <a href="/A165353/b165353.txt">Table of n, a(n) for n = 1..1000</a> %F A165353 a(n)+(a(n)^2-1)/8 = A165352(n). %t A165353 Select[Prime[Range[250]], PrimeQ[# + (#^2 - 1)/8] &] (* _Vincenzo Librandi_, Sep 01 2012 *) %o A165353 (Magma) [n: n in [3..1500] |IsPrime(n) and IsPrime(n+(n^2-1) div 8)]; // _Vincenzo Librandi_, Sep 01 2012 %Y A165353 Cf. A165352, A165354. %K A165353 nonn,easy %O A165353 1,1 %A A165353 _Vincenzo Librandi_, Sep 16 2009 %E A165353 More terms from _R. J. Mathar_, Sep 21 2009