%I A133452
%S A133452 3,5,7,10,1,3,10,12,1,3,10,12,1,5,7,12,3,5,7,10,1,5,7,10,1,5,7,12,3,5,
               7,
%T A133452 10,3,5,7,10,1,5,7,10,1,5,7,12,3,5,7,10,3,5,7,10,1,3,10,12,1,3,10,12,3,
%U A133452 5,7,10,4,6,8,11,2,4,9,11,2,4,9,11,4,6,8,11,4,6,8,11,2,6,8,9,4,6,8,11,
               2
%N A133452 Graph substitution of two octahedra inside an icosahedron connected at 
               p=1: disconnected at p=0 ( concept similar to two tetrahedra inside 
               a cube).
%C A133452 The four tone chords have a more pleasant sound that the connected 5 
               tone chords.
%F A133452 p=0: 1->{2*p, 3, 5, 7, 10}; 2->{1*p, 4, 6, 8, 11}; 3->{1, 4*p, 5, 7, 
               10}; 4->{2, 3*p, 6, 8, 9}; 5->{1, 3, 6*p, 10, 12}; 6->{2, 4, 5*p, 
               9, 11}; 7->{1, 3, 8*p, 10, 12}; 8->{2, 4, 7*p, 9, 11}; 9->{4, 6, 
               8, 11, 12*p}; 10->{1, 5, 7, 11*p, 12}; 11->{2, 6, 8, 9, 10*p}; 12->
               {3, 5, 7, 9*p, 10};
%t A133452 (*TessOctahedron embedded in icosahedron : p = 0 *) Clear[s] s[1] = {3, 
               5, 7, 10}; s[2] = {4, 6, 8, 11}; s[3] = {1, 5, 7, 10}; s[4] = {2, 
               6, 8, 9}; s[5] = {1, 3, 10, 12}; s[6] = {2, 4, 9, 11}; s[7] = {1, 
               3, 10, 12}; s[8] = {2, 4, 9, 11}; s[9] = {4, 6, 8, 11}; s[10] = {1, 
               5, 7, 12}; s[11] = {2, 6, 8, 9}; s[12] = {3, 5, 7, 10}; t[a_] := 
               Flatten[s /@ a]; p[0] = {1, 2}; p[1] = t[p[0]]; p[n_] := t[p[n - 
               1]]; p[3]
%Y A133452 Cf. A132725.
%Y A133452 Sequence in context: A068061 A062887 A062886 this_sequence A140607 A071561 
               A138968
%Y A133452 Adjacent sequences: A133449 A133450 A133451 this_sequence A133453 A133454 
               A133455
%K A133452 nonn,uned
%O A133452 1,1
%A A133452 Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Nov 27 2007