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 A039775 #5 Mar 30 2012 17:20:56 %S A039775 0,0,1,1,2,1,3,3,3,1,4,3,5,3,3,5,6,5,7,5,4,5,8,7,8,5,8,5,9,7,10,10,6, %T A039775 7,7,9,11,7,6,9,12,9,13,9,11,9,14,13,14,13,9,10,15,14,11,12,9,11,16, %U A039775 14,17,12,14,17,12,13,18,13,12,15,19,18,20,15,18,14,16,15,21,19,21,16 %N A039775 Number of new fractions m/n, where m is prime, (m,n)=1 and "new" means the value of mn has not occurred before. %Y A039775 Cf. A014665, A039776. %K A039775 nonn %O A039775 1,5 %A A039775 _Olivier Gérard_