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 A107609 #20 Aug 21 2021 13:12:29
%S A107609 2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,2,3,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
%T A107609 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,3,4,3,3,4,4,4,4,4,4,4,
%U A107609 4,4,4,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4
%N A107609 a(n) = round(n / pi(n)) = round(A000027(n) / A000720(n)).
%C A107609 This sequence grows very slowly. The first n for which a(n) = 5 is 190, then 556 for 6, 1821 for 7, etc. - _Alonso del Arte_, Feb 27 2012
%e A107609 a(6) = 2 because pi(6) = 3 and 6/3 = 2.
%e A107609 a(7) = 2 because pi(7) = 4 and 7/4 = 1.75, which rounds up to 2.
%t A107609 Table[ Round[ n / PrimePi[ n]], {n, 2, 106}]
%Y A107609 Cf. A000720, A107610, A107614, A272231.
%K A107609 nonn
%O A107609 2,1
%A A107609 _Jonathan Vos Post_ and _Robert G. Wilson v_, May 17 2005