A145352 Triangle read by rows, A054525 * A157497.

1, 0, 2, 0, 0, 3, 0, 2, 0, 4, 0, 0, 0, 0, 5, 0, 4, 6, 0, 0, 6, 0, 0, 0, 0, 0, 0, 7, 0, 4, 0, 12, 0, 0, 0, 8, 0, 0, 15, 0, 0, 0, 0, 0, 9, 0, 8, 0, 0, 20, 0, 0, 0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 4, 21, 36, 0, 30, 0, 0, 0, 0, 0, 12

Offset: 1

Author

Gary W. Adamson & Mats Granvik, Mar 01 2009

Keywords

• nonn
• tabl

Comments

Row sums = A156833: (1, 2, 3, 6, 5, 16, 7,...)

Examples

			First few rows of the triangle =
1;
0, 2;
0, 0, 3;
0, 2, 0, 4;
0, 0, 0, 0, 5;
0, 4, 6, 0, 0, 6;
0, 0, 0, 0, 0, 0, 7;
0, 4, 0, 12, 0, 0, 0, 8;
0, 0, 15, 0, 0, 0, 0, 0, 9;
0, 8, 0, 0, 20, 0, 0, 0, 0, 10;
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11;
0, 4, 21, 36, 0, 30, 0, 0, 0, 0, 0, 12;
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13;
0, 12, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 14;
...
		

Crossrefs

Cf. A157497, A054525, A156833

Formula

Inverse Mobius transform of triangle A157497.