Search: id:A143276
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%I A143276
%S A143276 1,0,1,1,0,1,1,0,0,1,3,0,0,0,1,0,5,10,0,0,1,5,0,0,0,0,0,1,2,1,0,0,0,0,
               0,
%T A143276 1,4,0,1,0,0,0,0,0,1,0,3,0,0,0,0,0,0,0,1,9,0,0,0,0,0,0,0,0,0,1,1,0,1,1,
%U A143276 0,0,0,0,0,0,0,1,11,0,0,0,0,0,0,0,0,0,0,0,1,0,5,0,0,0,0,0,0,0,0,0,0,0,
               1
%N A143276 Triangle read by rows, A054525 * A054523, 1<=k<=n.
%C A143276 Row sums = phi(n), A000010: (1, 1, 2, 2, 4, 2, 6,...).
%C A143276 Left border = A007431: (1, 0, 1, 1, 3, 0, 5, 2, 4,...).
%F A143276 Triangle read by rows, Mobius transform of triangle A054523.
%e A143276 First few rows of the triangle =
%e A143276 1;
%e A143276 0, 1;
%e A143276 1, 0, 1;
%e A143276 1, 0, 0, 1;
%e A143276 3, 0, 0, 0, 1;
%e A143276 0, 1, 0, 0, 0, 1;
%e A143276 5, 0, 0, 0, 0, 0, 1;
%e A143276 2, 1, 0, 0, 0, 0, 0, 1;
%e A143276 ...
%Y A143276 Cf. A054525, A054523, A000010, A007431.
%Y A143276 Sequence in context: A083206 A069531 A035677 this_sequence A101941 A089313 
               A052998
%Y A143276 Adjacent sequences: A143273 A143274 A143275 this_sequence A143277 A143278 
               A143279
%K A143276 nonn,tabl
%O A143276 1,11
%A A143276 Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 03 2008

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