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Inverse Möbius transform of A349137, where A349137(n) = phi(A003602(n)).
3

%I #11 Nov 14 2021 17:14:19

%S 1,2,2,3,3,4,3,4,6,6,3,6,7,6,8,5,7,12,5,9,14,6,5,8,15,14,12,9,9,16,9,

%T 6,20,14,11,18,19,10,16,12,13,28,11,9,34,10,9,10,23,30,20,21,19,24,17,

%U 12,34,18,9,24,31,18,34,7,29,40,17,21,30,22,13,24,37,38,38,15,29,32,17,15,52,26,13,42,51,22,30

%N Inverse Möbius transform of A349137, where A349137(n) = phi(A003602(n)).

%H Antti Karttunen, <a href="/A349138/b349138.txt">Table of n, a(n) for n = 1..16384</a>

%F a(n) = Sum_{d|n} A349137(d).

%o (PARI)

%o A349137(n) = eulerphi((1+(n>>valuation(n,2)))/2);

%o A349138(n) = sumdiv(n,d,A349137(d));

%Y Cf. A000010, A003602, A349137.

%Y Cf. also A349122.

%K nonn,look

%O 1,2

%A _Antti Karttunen_, Nov 13 2021