A050161 T(n,k)=S(2n+1,n-1,k-1), 0<=k<=n, n >= 0, array S as in A050157.

0, 1, 1, 3, 4, 5, 9, 14, 20, 21, 28, 48, 75, 83, 84, 90, 165, 275, 319, 329, 330, 297, 572, 1001, 1209, 1274, 1286, 1287, 1001, 2002, 3640, 4550, 4900, 4990, 5004, 5005, 3432, 7072, 13260, 17068, 18768, 19312, 19431, 19447

Offset: 0

Author

Clark Kimberling

Keywords

• nonn
• tabl

Examples

			Rows: {0}; {1,1}; {3,4,5}; ...
		

Formula

T(n, k)=Sum{t(n, j): 0<=j<=k}, array t as in A050153.