A173402 (A007318 - A112468)/2.

0, 0, 0, 0, 1, 0, 0, 2, 1, 0, 0, 3, 2, 2, 0, 0, 4, 3, 6, 2, 0, 0, 5, 4, 13, 6, 3, 0, 0, 6, 5, 24, 13, 12, 3, 0, 0, 7, 6, 40, 24, 34, 12, 4, 0, 0, 8, 7, 62, 40, 80, 34, 20, 4, 0, 0, 9, 8, 91, 62, 166, 80, 70, 20, 5, 0, 0, 10, 9, 128, 91, 314, 166, 200, 70, 30, 5, 0

Offset: 1

Author

Mark Dols, Feb 17 2010

Keywords

• nonn
• tabl

Comments

Same as A131053, but with additional row/column of zeros.

Examples

			Array starts:
0,0,0,0
0,1,1,2
0,2,2,6
0,3,3,13
		

Crossrefs

Cf. A007318, A112468, A131054, A131053.