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 A110998 #8 Jun 12 2017 19:22:14 %S A110998 2,4,16,38,40,44,70,82,86,88,116,128,130,142,152,158,170,178,194,224, %T A110998 226,238,262,268,298,304,310,320,346,352,362,364,368,392,406,418,434, %U A110998 446,452,458,460,472,478,490,494 %N A110998 Numbers n such that 23*n^2 - 9 is prime. %e A110998 If n=88 then 23*n^2 - 9 = 178103 (prime). %t A110998 Select[Range[500], PrimeQ[(23#^2 - 9)] &] (* _Stefan Steinerberger_, Feb 28 2006 *) %o A110998 (PARI) is(n)=isprime(23*n^2-9) \\ _Charles R Greathouse IV_, Jun 12 2017 %K A110998 nonn,easy %O A110998 1,1 %A A110998 _Parthasarathy Nambi_, Sep 30 2005 %E A110998 More terms from _Stefan Steinerberger_, Feb 28 2006