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%I #22 May 02 2016 07:45:18
%S 1,1,2,2,4,4,4,4,12,12,12,12,24,24,24,24,24,48,96,96,96,192,192,192,
%T 192,192,192,192,192,192,192,384,384,384,384,384,768,768,768,768,768,
%U 768,768,1536,1536,1536,1536,1536,1536,1536,1536,3072,3072,3072,3072,3072
%N a(n) = phi(A090556(n)).
%C Starting at n=9, all known terms are of the form 3*2^k. - _Ivan Neretin_, May 01 2016
%H Ivan Neretin, <a href="/A090557/b090557.txt">Table of n, a(n) for n = 1..308</a>
%t EulerPhi@ NestList[Function[n, SelectFirst[Range[n + 1, 10^4], Divisible[EulerPhi@ #, EulerPhi@ n] &]], 1, 55] (* _Michael De Vlieger_, May 01 2016, Version 10 *)
%Y Cf. A014573, A090556.
%K nonn
%O 1,3
%A _Amarnath Murthy_, Dec 10 2003
%E More terms from _David Wasserman_, Jan 04 2006
%E Missing term a(1) prepended by _Ivan Neretin_, May 01 2016
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