Search: id:A071832
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%I A071832
%S A071832 1,8,4,3,2,3,8,1,4,2,3,1,3,4,1,2,1,3,1,3,2,1,1,1,3,1,3,1,1,1,1,3,1,3,1,
%T A071832 1,1,1,3,1,3,1,1,1,1,3,1,3,1,1,1,1,3,1,3,1,1,1,1,3,1,3,1,1,1,1,3,1,3,1,
%U A071832 1,1,1,3,1,3,1,1,1,1,3,1,3,1,1,1,1,3,1,3,1,1,1,1,3,1,3,1,1,1,1,3,1,3,1
%N A071832 Frequency ratios for notes of C-major scale starting at c = 1 (denominators).
%F A071832 a(n+7) = a(n) for n >= 21. (1,1,1,3,1,3,1 repeats) - Rick L. Shepherd 
               (rshepherd2(AT)hotmail.com), Apr 06 2006
%e A071832 The ratios are 1 (c), 9/8 (d), 5/4 (e), 4/3 (f), 3/2 (g), 5/3 (a), 15/
               8 (b); followed by these 7 numbers multiplied by successive powers 
               of 2.
%o A071832 (PARI) r=[1,9/8,5/4,4/3,3/2,5/3,15/8]; for(n=0,20, a=2^n*r; for(m=1,7, 
               print1(denominator(a[m]),","))) - Rick L. Shepherd (rshepherd2(AT)hotmail.com), 
               Apr 06 2006
%Y A071832 Cf. A071831, A071833.
%Y A071832 Sequence in context: A089729 A050135 A109595 this_sequence A091475 A154211 
               A019723
%Y A071832 Adjacent sequences: A071829 A071830 A071831 this_sequence A071833 A071834 
               A071835
%K A071832 nonn,frac,easy,nice
%O A071832 0,2
%A A071832 N. J. A. Sloane (njas(AT)research.att.com), Jun 10 2002
%E A071832 More terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), Apr 06 
               2006

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