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A127468 Triangle read by rows: matrix product A127466*A054525.

%I A127468 #7 Sep 06 2013 19:30:27
%S A127468 1,0,2,-3,0,6,0,-4,0,8,-15,0,0,0,20,0,-6,0,0,0,12,-35,0,0,0,0,0,42,0,
%T A127468 -8,0,-16,0,0,0,32,-9,0,-36,0,0,0,0,0,54,0,-30,0,0,0,0,0,0,0,40,-99,0,
%U A127468 0,0,0,0,0,0,0,0,110,0,12,0,-24,0,-24,0,0,0,0,0,48
%N A127468 Triangle read by rows: matrix product A127466*A054525.
%C A127468 The row sums are n, the index of the row.
%F A127468 T(n,k) = sum_{j=k..n} A127466(n,j) * A054525(j,k).
%F A127468 T(n,n) = A002618(n).
%e A127468 First few rows of the triangle are:
%e A127468 1;
%e A127468 0, 2;
%e A127468 -3, 0, 6;
%e A127468 0, -4, 0, 8;
%e A127468 -15, 0, 0, 0, 20;
%e A127468 0, -6, 0, 0, 0, 12;
%e A127468 -35, 0, 0, 0, 0, 0, 42;
%e A127468 ...
%p A127468 A127468 := proc(n,k)
%p A127468     add( A127466(n,j)*A054525(j,k),j=k..n) ;
%p A127468 end proc: # _R. J. Mathar_, Sep 06 2013
%Y A127468 Cf. A127466, A054525, A002618.
%K A127468 tabl,sign
%O A127468 1,3
%A A127468 _Gary W. Adamson_, Jan 15 2007