Search: id:A092668
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%I A092668
%S A092668 1,2,4,9,23,63,190,612,2056,7155,25482,92205,337594,1246863,4636390,
%T A092668 17334801,65108062,245492244,928772650,3524337980,13409202676,
%U A092668 51141124287,195470831356,748607855769,2872202028517,11038251159312
%N A092668 Bisection of A000011.
%p A092668 with(numtheory): b:= proc(n) local s, d; if n = 0 then RETURN(1) else 
               s := 2^(floor(n/2)); for d in divisors(n) do s := s+(phi(2*d)*2^(n/
               d))/(2*n); od; RETURN(s/2); fi; end: seq(b(2*n-1),n=1..30); - Emeric 
               Deutsch (deutsch(AT)duke.poly.edu), Feb 13 2006
%Y A092668 Cf. A000011, A000117.
%Y A092668 Sequence in context: A001573 A135307 A000083 this_sequence A164039 A014137 
               A007476
%Y A092668 Adjacent sequences: A092665 A092666 A092667 this_sequence A092669 A092670 
               A092671
%K A092668 nonn,easy
%O A092668 0,2
%A A092668 N. J. A. Sloane (njas(AT)research.att.com), Nov 24 2004
%E A092668 More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Feb 13 2006

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