A189913 - OEIS

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A189913 as a triangular array

											1
										1		1
									1		2		1
								1		3		3		3
							1		4		6		12		2
						1		5		10		30		10		10
					1		6		15		60		30		60		5
				1		7		21		105		70		210		35		35
			1		8		28		168		140		560		140		280		14
		1		9		36		252		252		1260		420		1260		126		126
	1		10		45		360		420		2520		1050		4200		630		1260		42

A189913 as a square array

1	1	1	1	1	1	1	1	1	1	1
1	2	3	4	5	6	7	8	9	10
1	3	6	10	15	21	28	36	45
3	12	30	60	105	168	252	360
2	10	30	70	140	252	420
10	60	210	560	1260	2520
5	35	140	420	1050
35	280	1260	4200
14	126	630
126	1260
42

A189913 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	1	2	3	4	5	6	7	8	9	10
		1	3	6	10	15	21	28	36	45
			3	12	30	60	105	168	252	360
				2	10	30	70	140	252	420
					10	60	210	560	1260	2520
						5	35	140	420	1050
							35	280	1260	4200
								14	126	630
									126	1260
										42