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 A177225 #2 Mar 30 2012 17:35:29 %S A177225 0,2,2,0,2,2,2,4,4,5,4,7,6,8,6,10,8,11,10,14,10,16,12,19,14,20,14,22, %T A177225 16,23,18,26,20,29,20,31,22,34,24,35,24,37,26,40,28,41,30,44,32,49,34, %U A177225 50,34,52 %N A177225 Pairs [x.y],[0.2],[2.0],[2.2]... such that 3*x/2+y is prime. %Y A177225 Cf. A067076, A173177, A173178 %K A177225 nonn %O A177225 1,2 %A A177225 _Eric Desbiaux_, May 05 2010