A122930 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A122930 as a triangular array

							1
						0		2
					1		0		6
				1		2		0		15
			2		2		6		0		40
		3		4		6		15		0		104
	5		6		12		15		40		0		273

A122930 as a square array

1	0	1	1	2	3	5
2	0	2	2	4	6
6	0	6	6	12
15	0	15	15
40	0	40
104	0
273

A122930 as an upper right triangle

1	0	1	1	2	3	5
	2	0	2	2	4	6
		6	0	6	6	12
			15	0	15	15
				40	0	40
					104	0
						273