%I A159937
%S A159937 1,1,1,2,0,2,2,1,0,2,4,0,0,0,4,2,2,2,0,0,2,6,0,0,0,0,0,6,4,2,0,2,0,0,0,
%T A159937 4,6,0,4,0,0,0,0,0,6,4,4,0,0,4,0,0,0,0,4,10,0,0,0,0,0,0,0,0,0,10,4,2,4,
%U A159937 4,0,2,0,0,0,0,0,4
%N A159937 Triangle read by rows, A054525 * A127478, as infinite lower triangular 
               matrices.
%C A159937 Row sums = A029935: (1, 2, 4, 5, 8, 8,...). Right and left borders = 
               A000010, phi(n).
%F A159937 A054525 * A127478 = Mobius transform of triangle A127478.
%e A159937 First few rows of the triangle =
%e A159937 1;
%e A159937 1, 1;
%e A159937 2, 0, 2;
%e A159937 2, 1, 0, 2;
%e A159937 4, 0, 0, 0, 4;
%e A159937 2, 2, 2, 0, 0, 2;
%e A159937 6, 0, 0, 0, 0, 0, 6;
%e A159937 4, 2, 0, 2, 0, 0, 0, 4;
%e A159937 6, 0, 4, 0, 0, 0, 0, 0, 6;
%e A159937 4, 4, 0, 0, 4, 0, 0, 0, 0, 4;
%e A159937 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10;
%e A159937 4, 2, 4, 4, 0, 2, 0, 0, 0, 0, 0, 4;
%e A159937 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12;
%e A159937 6, 6, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 6;
%e A159937 8, 0, 8, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8;
%e A159937 ...
%Y A159937 Cf. A127478, A029935
%Y A159937 Sequence in context: A082115 A161553 A099751 this_sequence A058728 A143751 
               A158950
%Y A159937 Adjacent sequences: A159934 A159935 A159936 this_sequence A159938 A159939 
               A159940
%K A159937 nonn,tabl
%O A159937 1,4
%A A159937 Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 26 2009