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Triangle T(n,k) = (2*k-1)*A000217(n-k+1) read by rows, 1<=k<=n.
1

%I #11 Mar 30 2012 17:25:11

%S 1,3,3,6,9,5,10,18,15,7,15,30,30,21,9,21,45,50,42,27,11,28,63,75,70,

%T 54,33,13,36,84,105,105,90,66,39,15,45,108,140,147,135,110,78,45,17,

%U 55,135,180,196,189,165,130,90,51,19,66,165

%N Triangle T(n,k) = (2*k-1)*A000217(n-k+1) read by rows, 1<=k<=n.

%e First few rows are:

%e 1;

%e 3, 3;

%e 6, 9, 5;

%e 10, 18, 15, 7;

%e 15, 30, 30, 21, 9;

%e 21, 45, 50, 42, 27, 11;

%e ...

%Y Cf. A002415 (row sums), A104716.

%K nonn,tabl,easy

%O 1,2

%A _Gary W. Adamson_, Mar 20 2005

%E One term corrected by R. J. Mathar, Oct 29 2011