A127970 - OEIS

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A127970 as a triangular array

											1
										1		1
									1		0		1
								1		0		0		1
							1		0		1		0		1
						1		0		0		0		1		1
					1		0		1		0		0		0		1
				1		0		0		0		0		0		0		1
			1		0		1		0		1		0		0		0		1
		1		0		0		0		1		0		0		0		1		1
	1		0		1		0		0		0		1		0

A127970 as a square array

1	1	1	1	1	1	1	1	1	1	1
1	0	0	0	0	0	0	0	0	0
1	0	1	0	1	0	1	0	1
1	0	0	0	0	0	0	0
1	1	0	0	1	1	0
1	0	0	0	0	0
1	0	0	0	1
1	0	0	0
1	1
1

A127970 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	1	0	0	0	0	0	0	0	0	0
		1	0	1	0	1	0	1	0	1
			1	0	0	0	0	0	0	0
				1	1	0	0	1	1	0
					1	0	0	0	0	0
						1	0	0	0	1
							1	0	0	0
								1	1
									1