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 A046458 #10 Oct 13 2019 02:32:41 %S A046458 4,6,8,12,14,20,32,38 %N A046458 Positive even integers that are not the sum of two nonprime odd integers. %C A046458 See A118081 for numbers not representable as the sum of two odd composite numbers. Roberts shows that every even number greater than 38 is the sum of an odd composite number and one of the five composite numbers 9, 15, 21, 27, 33. - _T. D. Noe_, Jun 01 2008, Jun 05 2008 %D A046458 Joe Roberts, "Lure of the Integers", The Mathematical Association of America, 1992, p. 189. %K A046458 nonn,fini,full %O A046458 1,1 %A A046458 _Patrick De Geest_, Aug 15 1998