Search: id:A143320
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%I A143320
%S A143320 1,4,1,8,1,1,15,4,1,0,21,4,1,0,1,33,8,4,0,1,1,41,8,4,0,1,
%T A143320 1,1,56,15,4,0,1,1,1,0,69,15,8,0,1,1,1,0,0,87,21,8,0,4,1,1,
%U A143320 0,0,1,99,21,8,0,4,1,1,0,0,1,1,127,33,15,0,4,4,1,0,0,1,1,0
%V A143320 1,4,-1,8,-1,-1,15,-4,-1,0,21,-4,-1,0,-1,33,-8,-4,0,-1,1,41,-8,-4,0,-1,
%W A143320 1,-1,56,-15,-4,0,-1,1,-1,0,69,-15,-8,0,-1,1,-1,0,0,87,-21,-8,0,-4,1,-1,
%X A143320 0,0,1,99,-21,-8,0,-4,1,-1,0,0,1,-1,127,-33,-15,0,-4,4,-1,0,0,1,-1,0
%N A143320 Triangle read by rows, A000012 * A143317; 1<=k<=n.
%C A143320 Left border = A024916: (1, 4, 8, 15, 21, 33,...).
%C A143320 Right border = mu(n), A008683.
%C A143320 Row sums = T(n), triangular numbers.
%F A143320 Triangle read by rows, A000012 * A143317; 1<=k<=n
%e A143320 First few rows of the triangle =
%e A143320 1;
%e A143320 4, -1;
%e A143320 8, -1, -1
%e A143320 15, -4, -1, 0;
%e A143320 21, -4, -1, 0, -1;
%e A143320 33, -8, -4, 0, -1, 1;
%e A143320 41, -3, -4, 0, -1, 1, -1;
%e A143320 ...
%Y A143320 Cf. A143317, A008683, A024916.
%Y A143320 Sequence in context: A134250 A139045 A084884 this_sequence A089146 A101512 
               A085994
%Y A143320 Adjacent sequences: A143317 A143318 A143319 this_sequence A143321 A143322 
               A143323
%K A143320 sign
%O A143320 1,2
%A A143320 Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 07 2008
%E A143320 Corrected last few terms. - Stuart Orford (sjorford(AT)gmail.com), Dec 
               22 2008

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