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 A217440 #30 Feb 16 2025 08:33:18 %S A217440 2659,2341,2039,1753,1483,1229,991,769,563,373,199,41,-101,-227,-337, %T A217440 -431,-509,-571,-617,-647,-661,-659,-641,-607,-557,-491,-409,-311, %U A217440 -197,-67,79,241,419,613,823,1049,1291,1549,1823,2113,2741,3079,3433,3803 %N A217440 Primes or negative values of primes of the form 8*n^2 - 326*n + 2659 for n >= 0. %C A217440 Terms are listed in the order of appearance. The absolute values are primes for 0 <= n <= 39. %H A217440 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Prime-GeneratingPolynomial.html">Prime Generating Polynomials</a> %t A217440 Select[Table[8*n^2 - 326*n + 2659, {n, 0, 50}], PrimeQ[#]&] %o A217440 (PARI) [n | n <- apply(m->8*m^2-326*m+2659, [0..100]), isprime(abs(n))] \\ _Charles R Greathouse IV_, Jun 18 2017 %Y A217440 Cf. A050267, A050268, A217439. %K A217440 sign,easy,less %O A217440 1,1 %A A217440 _Pedja Terzic_, Oct 03 2012 %E A217440 More terms (to distinguish from quadratic) from _Charles R Greathouse IV_, Jun 18 2017