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 A246759 #11 Jan 04 2022 21:57:53 %S A246759 0,2,9,48,324,1280,3750,9072,19208,36864,50625,65610,82944,110000, %T A246759 175692,269568,399854,576240,810000,1114112,1503378,1994544,2606420, %U A246759 3360000,4278582,5387888,6716184,8294400 %N A246759 Nonnegative numbers k such that x^5 - x^4 + k is reducible. %C A246759 Next term > 10^7. %e A246759 For k=2, x^5 - x^4 + 2 is reducible: x^5 - x^4 + 2 = (x+1) * (x^4 - 2*x^3 + 2*x^2 - 2*x + 2). %t A246759 Select[Range[0,83*10^5],!IrreduciblePolynomialQ[x^5-x^4+#]&] (* _Harvey P. Dale_, Dec 11 2017 *) %o A246759 (PARI) for(n=0, 10^7, if( !polisirreducible(x^5-x^4+n), print1(n,", "))); \\ _Joerg Arndt_, Sep 06 2014 %K A246759 nonn %O A246759 1,2 %A A246759 _M. Lawrence Glasser_, Sep 02 2014 %E A246759 More terms from _Joerg Arndt_, Sep 06 2014