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 A166362 #13 Oct 01 2019 04:13:28
%S A166362 1,2,2,4,6,4,4,6,8,8,6,8,12,10,8,20,12,18,12,8,16,20,16,24,12,18,24,
%T A166362 16,12,20,24,22,16,42,20,32,24,18,40,24,36,28,16,30,36,32,48,20,32,44,
%U A166362 24,24,36,40,36,60,24,32,54,40,24,64,42,56,40,24,72,44,60,46,72,32,42,60
%N A166362 a(n) = phi(nonprime(n)).
%C A166362 Essentially the same as A073256.
%H A166362 G. C. Greubel, <a href="/A166362/b166362.txt">Table of n, a(n) for n = 1..10000</a>
%F A166362 a(n) = A000010(A018252(n)).
%t A166362 Table[EulerPhi[FixedPoint[n + PrimePi@# &, n + PrimePi@n]], {n, 1, 100}] (* _G. C. Greubel_, May 10 2016 *)
%Y A166362 Cf. A000010, A073256, A018252.
%K A166362 nonn,look
%O A166362 1,2
%A A166362 _Juri-Stepan Gerasimov_, Oct 12 2009
%E A166362 Entries checked by _R. J. Mathar_, May 21 2010