A104715 Triangle T(n,k) = (2*k-1)*A000217(n-k+1) read by rows, 1<=k<=n.
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, 54, 33, 13, 36, 84, 105, 105, 90, 66, 39, 15, 45, 108, 140, 147, 135, 110, 78, 45, 17, 55, 135, 180, 196, 189, 165, 130, 90, 51, 19, 66, 165
Offset: 1
Examples
First few rows are: 1; 3, 3; 6, 9, 5; 10, 18, 15, 7; 15, 30, 30, 21, 9; 21, 45, 50, 42, 27, 11; ...
Extensions
One term corrected by R. J. Mathar, Oct 29 2011