A127710 - OEIS

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A127710 as a triangular array

											1
										0		2
									0		-2		3
								0		2		-3		4
							0		0		0		-4		5
						0		-2		3		0		-5		6
					0		0		0		0		0		-6		7
				0		2		-3		4		0		0		-7		8
			0		0		0		0		0		0		0		-8		9
		0		0		0		-4		5		0		0		0		-9		10
	0		0

A127710 as a square array

1	0	0	0	0	0	0	0	0	0	0
2	-2	2	0	-2	0	2	0	0	0
3	-3	0	3	0	-3	0	0
4	-4	0	0	4	0	-4
5	-5	0	0	0	5
6	-6	0	0	0
7	-7	0	0
8	-8	0
9	-9
10

A127710 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0
	2	-2	2	0	-2	0	2	0	0	0
		3	-3	0	3	0	-3	0	0
			4	-4	0	0	4	0	-4
				5	-5	0	0	0	5
					6	-6	0	0	0
						7	-7	0	0
							8	-8	0
								9	-9
									10