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 A062950 C(H(n)), where C(n) is Chowla's function (A048050) and H(n) is the half-totient function (A023022). 1

%I

%S -1,-1,0,-1,0,0,0,0,0,0,5,0,2,2,6,0,3,2,5,0,0,2,7,5,3,5,9,2,8,6,7,6,

%T 15,5,20,3,15,6,21,5,10,7,15,0,0,6,10,7,14,15,15,3,21,15,20,9,0,6,41,

%U 8,20,14,35,7,14,14,13,15,12,15,54,20,21,20,41,15,16,14,12,21,0,15,30,10,27,21,39,15,54,13,41,0,54,14,75,10,41,21,42,14

%N C(H(n)), where C(n) is Chowla's function (A048050) and H(n) is the half-totient function (A023022).

%o (PARI) C(n)=sigma(n)-n-1; H(n)=eulerphi(n)/2; j=[]; for(n=3,150,j=concat(j,C(H(n)))); j

%Y Cf. A048050, A023022.

%K sign

%O 3,11

%A _Jason Earls_, Jul 21 2001

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Last modified September 27 03:21 EDT 2020. Contains 337380 sequences. (Running on oeis4.)