Product of sigma(k)/phi(k) - CF

[Paul D Hanna]

Just now submitted the CF as A110036:
 
%I A110036
%S A110036 1,-1,2,0,0,-2,0,2,0,-2,2,0,-2,0,0,2,0,-2,2,0,0,-2,0,2,-2,0,
2,0,-2,0,0,2,0,-2,2,0,0,-2,0,2,0,-2,2,0,-2,0,0,2,-2,0,2,0,0,
-2,0,2,-2,0,2,0,-2,0,0,2,0,-2,2,0,0,-2,0,2,0,-2,2,0,-2,0,0,
2,0,-2,2,0,0,-2,0,2,-2,0,2,0,-2,0,0,2,-2,0,2,0,0,-2,0,2,0
%N A110036 Constant term of the partial quotients of the continued fraction 
expansion of 1 + Sum_{n>=0} 1/x^(2^n), where each partial quotient 
has the form {x + a(n)} after the initial constant term of 1.
%C A110036 Suggested by Ralf Stephan.
%e A110036 1 + 1/x + 1/x^2 + 1/x^4 + 1/x^8 + 1/x^16 + ... =
[1; x - 1, x + 2, x, x, x - 2, x, x + 2, x, x - 2, ...].
%o A110036 (PARI) contfrac(1+sum(n=0,10,1/x^(2^n)))
%O A110036 0
%K A110036 ,cofr,sign,
%A A110036 Paul D Hanna (pauldhanna at juno.com), Jul 08 2005