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 A132398 #14 Sep 08 2024 19:26:13 %S A132398 6,24,30,54,66,84,90,96,126,144,150,186,210,234,246,276,300,324,330, %T A132398 360,420,426,444,450,474,480,486,516,606,624,636,684,720,750,786,804, %U A132398 816,864,876,900,906,924,966,996,1014,1020,1056,1074,1104,1110,1116,1194 %N A132398 Numbers n such that 11*n^2 + 1 is prime. %C A132398 All terms are multiples of 6. %e A132398 If n=6 then 11*n^2 + 1 = 397 (prime). %e A132398 If n=144 then 11*n^2 + 1 = 228097 (prime). %t A132398 Select[Range[1300], PrimeQ[11*#^2 + 1] &] (* _Stefan Steinerberger_, Nov 13 2007 *) %o A132398 (Magma) [ n: n in [0..1500] | IsPrime(11*n^2 + 1) ]; // _Vincenzo Librandi_, Jan 31 2011 %o A132398 (PARI) is(n)=isprime(11*n^2+1) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A132398 Cf. A111051, A132190. %K A132398 nonn,easy %O A132398 1,1 %A A132398 _Parthasarathy Nambi_, Nov 12 2007 %E A132398 More terms from _Stefan Steinerberger_, Nov 13 2007