A109466 - OEIS

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A109466 as a triangular array

														1
													0		1
												0		-1		1
											0		0		-2		1
										0		0		1		-3		1
									0		0		0		3		-4		1
								0		0		0		-1		6		-5		1
							0		0		0		0		-4		10		-6		1
						0		0		0		0		1		-10		15		-7		1
					0		0		0		0		0		5		-20		21		-8		1
				0		0		0		0		0		-1		15		-35		28		-9		1
			0		0		0		0		0		0		-6		35		-56		36		-10		1
		0		0		0		0		0		0		1		-21		70		-84		45		-11		1
	0		0		0		0

A109466 as a square array

1	0	0	0	0	0	0	0	0	0	0	0	0	0
1	-1	0	0	0	0	0	0	0	0	0	0	0
1	-2	1	0	0	0	0	0	0	0	0	0
1	-3	3	-1	0	0	0	0	0	0	0
1	-4	6	-4	1	0	0	0	0
1	-5	10	-10	5	-1	0	0
1	-6	15	-20	15	-6	1
1	-7	21	-35	35	-21
1	-8	28	-56	70
1	-9	36	-84
1	-10	45
1	-11
1

A109466 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0	0	0	0
	1	-1	0	0	0	0	0	0	0	0	0	0	0
		1	-2	1	0	0	0	0	0	0	0	0	0
			1	-3	3	-1	0	0	0	0	0	0	0
				1	-4	6	-4	1	0	0	0	0
					1	-5	10	-10	5	-1	0	0
						1	-6	15	-20	15	-6	1
							1	-7	21	-35	35	-21
								1	-8	28	-56	70
									1	-9	36	-84
										1	-10	45
											1	-11
												1