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 A140887 #6 Oct 04 2012 10:51:25
%S A140887 1,1,1,2,3,2,3,2,3,3,4,2,3,4,2,3,3,6,3,3,3,2,4,4,4,3,5,2,4,4,4,4,4,3,
%T A140887 3,4,2,5,5,4,3,4,4,2,6,5,5,3,4,1,6,3,4,2,5,4,4,5,4,4,5,6,1,5,5,5,3,3,
%U A140887 5,3,5,3,6,5,4,4,3,5,4,1,5,4,5,7,3,5,5,5,4,1,3,4,5,3,5,4,4,5,4,6,4,5,3,6,6
%N A140887 Number of nonprimes in [30n - 30, 30n] coprime to 30.
%C A140887 For almost all n, a(n) = phi(30) = 8. It first attains this value at a(361).
%e A140887 {1,7,11,13,17,19,23,29} are coprime to 30 in [0, 30]; 1 is nonprime, so a(1) = 1.
%e A140887 {31,37,41,43,47,49,53,59} are coprime to 30 in [30, 60]; 49 is nonprime, so a(2) = 1.
%t A140887 Table[Count[Range[30n-30,30n],_?(CoprimeQ[#,30]&&!PrimeQ[#]&)],{n,110}] (* _Harvey P. Dale_, Oct 04 2012 *)
%Y A140887 Cf. A007775.
%K A140887 nonn,easy,less
%O A140887 1,4
%A A140887 _Juri-Stepan Gerasimov_, Jul 06 2008
%E A140887 Rewritten and extended by _Charles R Greathouse IV_, Mar 26 2010