A177978 - OEIS

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A177978 as a triangular array

														1
													0		1
												0		-1		1
											0		1		-1		1
										0		-1		0		-1		1
									0		1		1		0		-1		1
								0		-1		-1		0		0		-1		1
							0		1		0		1		0		0		-1		1
						0		-1		1		-1		0		0		0		-1		1
					0		1		-1		0		1		0		0		0		-1		1
				0		-1		0		0		-1		0		0		0		0		-1		1
			0		1		1		1		0		1		0		0		0		0		-1		1
		0		-1		-1		-1		0		-1		0		0		0		0		0		-1		1
	0		1

A177978 as a square array

1	0	0	0	0	0	0	0	0	0	0	0	0	0
1	-1	1	-1	1	-1	1	-1	1	-1	1	-1	1
1	-1	0	1	-1	0	1	-1	0	1	-1
1	-1	0	0	1	-1	0	0	1	-1
1	-1	0	0	0	1	-1	0	0
1	-1	0	0	0	0	1	-1
1	-1	0	0	0	0	0
1	-1	0	0	0	0
1	-1	0	0	0
1	-1	0	0
1	-1	0
1	-1
1

A177978 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0	0	0	0
	1	-1	1	-1	1	-1	1	-1	1	-1	1	-1	1
		1	-1	0	1	-1	0	1	-1	0	1	-1
			1	-1	0	0	1	-1	0	0	1	-1
				1	-1	0	0	0	1	-1	0	0
					1	-1	0	0	0	0	1	-1
						1	-1	0	0	0	0	0
							1	-1	0	0	0	0
								1	-1	0	0	0
									1	-1	0	0
										1	-1	0
											1	-1
												1