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 A153327 #15 Sep 08 2022 08:45:39 %S A153327 1,4,5,7,8,10,13,15,16,19,20,21,22,25,27,28,29,30,31,32,33,34,35,36, %T A153327 37,39,40,43,45,46,49,50,52,54,55,56,57,58,59,60,61,64,65,67,70,71,72, %U A153327 73,74,75,76,78,79,80,82,83,84,85,87,88,90,91,92,94,95,96,97,98,99,100 %N A153327 Numbers n such that 16*n+5 is not prime. %H A153327 Vincenzo Librandi, <a href="/A153327/b153327.txt">Table of n, a(n) for n = 1..1000</a> %e A153327 Distribution of the terms in the following triangular array: %e A153327 *; %e A153327 *,*; %e A153327 1,*,*; %e A153327 *,*,*,*; %e A153327 *,*,*,*,*,; %e A153327 *,*,*,7,*,*; %e A153327 *,*,*,*,10,*,*; %e A153327 *,5,*,*,*,*,*,*; %e A153327 *,*,8,*,*,*,*,*,*; %e A153327 *,*,*,*,*,*,*,22,*,*; %e A153327 4,*,*,*,*,*,*,*,27*,*; %e A153327 *,*,*,*,*,20,*,*,*,*,*,*; %e A153327 *,*,*,*,*,*,25,*,*,*,*,*,*; etc. %e A153327 where * marks the non-integer values of (2*h*k + k + h - 2)/8 with h >= k >= 1. - _Vincenzo Librandi_, Jan 17 2013 %t A153327 Select[Range[100], !PrimeQ[16# + 5]&] (* _Harvey P. Dale_, Oct 03 2011 *) %o A153327 (Magma) [n: n in [0..150] | not IsPrime(16*n + 5)]; // _Vincenzo Librandi_, Jan 12 2013 %Y A153327 Cf. A127590. %K A153327 nonn,easy %O A153327 1,2 %A A153327 _Vincenzo Librandi_, Dec 23 2008