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 A153052 #26 Jul 13 2025 11:02:31 %S A153052 2,5,8,10,11,14,15,17,20,22,23,25,26,29,30,32,35,36,38,40,41,43,44,45, %T A153052 47,50,53,55,56,57,58,59,60,62,64,65,68,69,70,71,74,75,77,78,80,82,83, %U A153052 85,86,89,90,91,92,95,98,99,100,101,102,104,105,106,107,108,110 %N A153052 Numbers m such that 2*m + 5 is not a prime. %C A153052 One less than the associated entry in A153238. - _R. J. Mathar_, Jan 05 2011 %C A153052 The terms are the values of 2*h*k + k + h - 2, where h and k are positive integers. - _Vincenzo Librandi_, Jan 19 2013 %H A153052 Vincenzo Librandi, <a href="/A153052/b153052.txt">Table of n, a(n) for n = 1..1000</a> %t A153052 Select[Range[0, 150], !PrimeQ[2*# + 5] &] (* _Vincenzo Librandi_, Oct 16 2012 *) %o A153052 (Magma) [n: n in [0..110]| not IsPrime(2*n+5)]; // _Vincenzo Librandi_, Oct 16 2012 %Y A153052 Cf. A089038, A153238, A154680. %K A153052 nonn,easy %O A153052 1,1 %A A153052 _Vincenzo Librandi_, Dec 17 2008