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 A141096 #15 Sep 30 2024 04:49:56
%S A141096 4,6,8,12,14,18,20,24,30,32,38,42,48,54,60,72,80,84,90,108,110,132,
%T A141096 138,140,150,180
%N A141096 Even numbers not representable as the sum of two coprime nonprime numbers.
%C A141096 Numbers k such that A141095(k/2) = 0.
%C A141096 180 is the last term.
%C A141096 This sequence is a subsequence of A141098.
%t A141096 t = Table[Length[Select[Range[n/2], ! PrimeQ[#] && ! PrimeQ[n - #] && GCD[#, n - #] == 1 &]], {n, 2, 2000, 2}]; Flatten[2*Position[t, 0]] (* _T. D. Noe_, Dec 05 2013 *)
%Y A141096 Cf. A141095, A141098.
%K A141096 nonn,fini,full
%O A141096 1,1
%A A141096 _T. D. Noe_, Jun 02 2008