A137391 - OEIS

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A137391 as a triangular array

											1
										1		1
									2		4		1
								0		12		9		1
							0		24		48		16		1
						0		0		180		140		25		1
					0		0		360		840		330		36		1
				0		0		0		3360		2940		672		49		1
			0		0		0		6720		18480		8400		1232		64		1
		0		0		0		0		75600		75600		20664		2088		81		1
	0		0		0		0		151200		483840		252000		45360		3330

A137391 as a square array

1	1	2	0	0	0	0	0	0	0	0
1	4	12	24	0	0	0	0	0	0
1	9	48	180	360	0	0	0	0
1	16	140	840	3360	6720	0	0
1	25	330	2940	18480	75600	151200
1	36	672	8400	75600	483840
1	49	1232	20664	252000
1	64	2088	45360
1	81	3330
1

A137391 as an upper right triangle

1	1	2	0	0	0	0	0	0	0	0
	1	4	12	24	0	0	0	0	0	0
		1	9	48	180	360	0	0	0	0
			1	16	140	840	3360	6720	0	0
				1	25	330	2940	18480	75600	151200
					1	36	672	8400	75600	483840
						1	49	1232	20664	252000
							1	64	2088	45360
								1	81	3330
									1