A099246 - OEIS

%I #10 Oct 10 2013 16:24:00

%S 1,1,2,1,3,3,3,1,4,2,2,4,2,4,4,1,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,1,6,3,

%T 3,2,3,2,2,3,3,2,2,3,2,3,3,6,3,2,2,3,2,3,3,6,2,3,3,6,3,6,6,1,7,7,7,7,

%U 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7

%N Denominator of relative frequency of number of ones in binary representation of n.

%C Numerator = A099245;

%C a(n)*A000120(n)=A099245(n)*A070939(n);

%C for n>0: a(n) = A070939(n)/A099244(n);

%C a(n) = 1 iff n = A000225(k).

%H Reinhard Zumkeller, <a href="/A099246/b099246.txt">Table of n, a(n) for n = 0..10000</a>

%H <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a>

%F a(n) = if n=0 then 1 else A070939(n)/GCD(A070939(n), A000120(n)).

%o (Haskell)

%o import Data.Ratio ((%), denominator)

%o a099246 n = denominator $ (a000120 n) % (a070939 n)

%o -- _Reinhard Zumkeller_, Oct 10 2013

%Y Cf. A007088.

%K nonn,frac

%O 0,3

%A _Reinhard Zumkeller_, Oct 08 2004