A156608 - OEIS

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A156608 as a triangular array

											1
										1		1
									1		-1		1
								1		1		1		1
							1		1		-1		1		1
						1		-2		2		2		-2		1
					1		1		2		2		2		1		1
				1		1		-1		2		2		-1		1		1
			1		-2		2		2		-4		2		2		-2		1
		1		1		2		2		2		2		2		2		1		1
	1		1		-1		2		2		-1		2		2		-1		1		1

A156608 as a square array

1	1	1	1	1	1	1	1	1	1	1
1	-1	1	1	-2	1	1	-2	1	1
1	1	-1	2	2	-1	2	2	-1
1	1	2	2	2	2	2	2
1	-2	2	2	-4	2	2
1	1	-1	2	2	-1
1	1	2	2	2
1	-2	2	2
1	1	-1
1	1
1

A156608 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	1	-1	1	1	-2	1	1	-2	1	1
		1	1	-1	2	2	-1	2	2	-1
			1	1	2	2	2	2	2	2
				1	-2	2	2	-4	2	2
					1	1	-1	2	2	-1
						1	1	2	2	2
							1	-2	2	2
								1	1	-1
									1	1
										1