A139801 A139687(n) (1, 1, 1, 2, 2, 1) differences by rows, 0's deleted (*).Triangle on line.

1, 2, 2, 2, 3, 3, 3, 6, 9, 9, 3, 6, 10, 14, 14, 4, 10, 20, 34, 48, 48, 4, 10, 20, 35, 55, 75, 75, 5, 15, 35, 70, 125, 200, 275, 275, 5, 15, 35, 70, 126, 209, 319, 429, 429, 6, 21, 56, 126, 252, 461, 780, 1209, 1638, 1638

Offset: 0

Author

Paul Curtz, Jun 14 2008

Keywords

• nonn
• tabl
• uned

Comments

(*) Full Triangle:

0;

1, 0;

2, 2, 0;

2, 3, 3, 0;

3, 6, 9, 9, 0;

3, 6, 10, 14, 14, 0;

Formula

Even rows (with a leading 1) are in A139687.Must be separated from odd rows.