A169590 Triangle T(n,k) with : column n = A000034 if n even and column n = A000007 if n odd.

1, 2, 1, 1, 0, 1, 2, 0, 2, 1, 1, 0, 1, 0, 1, 2, 0, 2, 0, 2, 1, 1, 0, 1, 0, 1, 0, 1, 2, 0, 2, 0, 2, 0, 2, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1

Offset: 0

Author

Philippe Deléham, Dec 02 2009

Keywords

• nonn
• tabl

Comments

Row sums : A145051.

Examples

			Triangle begins: 1 ; 2,1 ; 1,0,1 ; 2,0,2,1 ; 1,0,1,0,1 ; 2,0,2,0,2,1 ; ...
		

Formula

Sum_{k, 0<=k<=n} T(n,k)= A145051(n+1).