A089975 - OEIS

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A089975 as a triangular array

												1
											0		1
										0		1		1
									0		1		2		1
								0		0		4		3		1
							0		0		6		9		4		1
						0		0		6		24		16		5		1
					0		0		0		54		60		25		6		1
				0		0		0		90		204		120		36		7		1
			0		0		0		90		600		540		210		49		8		1
		0		0		0		0		1440		2220		1170		336		64		9		1
	0		0		0		0		2520		8100		6120		2226		504		81		10		1

A089975 as a square array

1	0	0	0	0	0	0	0	0	0	0	0
1	1	1	0	0	0	0	0	0	0	0
1	2	4	6	6	0	0	0	0	0
1	3	9	24	54	90	90	0	0
1	4	16	60	204	600	1440	2520
1	5	25	120	540	2220	8100
1	6	36	210	1170	6120
1	7	49	336	2226
1	8	64	504
1	9	81
1	10
1

A089975 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0	0
	1	1	1	0	0	0	0	0	0	0	0
		1	2	4	6	6	0	0	0	0	0
			1	3	9	24	54	90	90	0	0
				1	4	16	60	204	600	1440	2520
					1	5	25	120	540	2220	8100
						1	6	36	210	1170	6120
							1	7	49	336	2226
								1	8	64	504
									1	9	81
										1	10
											1