A130210 Triangle read by rows: matrix product A051731 * A130209.

1, 1, 2, 1, 0, 2, 1, 2, 0, 3, 1, 0, 0, 0, 2, 1, 2, 2, 0, 0, 4, 1, 0, 0, 0, 0, 0, 2, 1, 2, 0, 3, 0, 0, 0, 4, 1, 0, 2, 0, 0, 0, 0, 0, 3, 1, 2, 0, 0, 2, 0, 0, 0, 0, 4, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 2, 2, 3, 0, 4, 0, 0, 0, 0, 0, 6, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 2

Offset: 1

Author

Gary W. Adamson, May 17 2007

Keywords

• nonn
• tabl
• easy

Examples

			First few rows of the triangle are:
1;
1, 2;
1, 0, 2;
1, 2, 0, 3;
1, 0, 0, 0, 2;
1, 2, 2, 0, 0, 4;
1, 0, 0, 0, 0, 0, 2;
...
		

Crossrefs

Cf. A000005, A007425 (row sums).

Programs

Maple

A130210 := proc(n,k)
    add( A051731(n,j)*A130209(j,k),j=k..n) ;
end proc:
seq(seq(A130210(n,k),k=1..n),n=1..15) ;  # R. J. Mathar, Aug 06 2016

Formula

Inverse Moebius transform of A130209.

T(n,n) = A000005(n).