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 A243199 #7 Jun 11 2014 21:32:45 %S A243199 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,4,0,0,0,0,0,0,0,2,0,0,0,0,0,2, %T A243199 2,1,4,0,0,4,4,0,4,0,0,0,0,2,0,0,0,5,0,0,4,4,4,4,0,0,0,0,0,0,0,0,0,2, %U A243199 0,0,0,1,4,5,4,4,4,4,0,0,0,0,0,0,0,0,0 %N A243199 Let A242719(n)-1 = prime(l)*prime(m), l<=m; a(n)=m-l. %Y A243199 Cf. A242719, A243154, A243158. %K A243199 nonn %O A243199 2,18 %A A243199 _Vladimir Shevelev_, Jun 01 2014 %E A243199 More terms from _Peter J. C. Moses_, Jun 01 2014