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 A272302 #24 Feb 16 2025 08:33:33 %S A272302 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25, %T A272302 26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,48,49, %U A272302 51,53,56,57,59,60,62,63,65,66,69,70,74,79,80,81,82,85 %N A272302 Nonnegative numbers n such that abs(3n^3 - 183n^2 + 3318n - 18757) is prime. %C A272302 47 is the smallest number not in this sequence. %H A272302 Robert Price, <a href="/A272302/b272302.txt">Table of n, a(n) for n = 1..2839</a> %H A272302 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Prime-GeneratingPolynomial.html">Prime-Generating Polynomials</a> %e A272302 4 is in this sequence since abs(3*4^3 - 183*4^2 + 3318*4 - 18757) = abs(192-2928+13272-18757) = 8221 is prime. %t A272302 Select[Range[0, 100], PrimeQ[3#^3 - 183#^2 + 3318# - 18757 ] &] %o A272302 (PARI) is(n)=isprime(abs(3*n^2-183*n^2+3318*n-18757)) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A272302 Cf. A050268, A050267, A005846, A007641, A007635, A048988, A050265, A050266, A271980, A272030, A272074, A272075, A272160, A271144, A272285, A272401. %K A272302 nonn,less %O A272302 1,3 %A A272302 _Robert Price_, Apr 28 2016