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 A152943 #6 Nov 05 2017 13:19:32 %S A152943 1785,2145,2717,3705,3795,3885,3927,4785,4845,5005,5115,5187,5291, %T A152943 5313,5655,6765,7035,7215,7293,8211,8265,8385,8569,8855,9269,9435, %U A152943 9735,9867,10065,10545,10659,10857,10965,11055,11339,11685,12243,12597,12673 %N A152943 Odd squarefree numbers n such that the cyclotomic polynomial Phi(n,x) has height 5. %C A152943 The height of a polynomial is the maximum of the absolute value of its coefficients. Subsequence of A154430. %H A152943 T. D. Noe, <a href="/A152943/b152943.txt">Table of n, a(n) for n = 1..1000</a> %o A152943 (PARI) is(n)=issquarefree(n) && n%2 && vecmax(abs(Vec(polcyclo(n))))==5 \\ _Charles R Greathouse IV_, Nov 05 2017 %Y A152943 Cf. A152955, A152940, A152941, A152942. %K A152943 nonn %O A152943 1,1 %A A152943 _T. D. Noe_, Dec 16 2008, Jan 09 2009