A180870 - OEIS

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A180870 as a triangular array

										1
									2		1
								4		2		-1
							8		4		-4		-1
						16		8		-12		-4		1
					32		16		-32		-12		6		1
				64		32		-80		-32		24		6		-1
			128		64		-192		-80		80		24		-8		-1
		256		128		-448		-192		240		80		-40		-8		1
	512		256		-1024		-448		672		240		-160		-40		10		1

A180870 as a square array

1	2	4	8	16	32	64	128	256	512
1	2	4	8	16	32	64	128	256
-1	-4	-12	-32	-80	-192	-448	-1024
-1	-4	-12	-32	-80	-192	-448
1	6	24	80	240	672
1	6	24	80	240
-1	-8	-40	-160
-1	-8	-40
1	10
1

A180870 as an upper right triangle

1	2	4	8	16	32	64	128	256	512
	1	2	4	8	16	32	64	128	256
		-1	-4	-12	-32	-80	-192	-448	-1024
			-1	-4	-12	-32	-80	-192	-448
				1	6	24	80	240	672
					1	6	24	80	240
						-1	-8	-40	-160
							-1	-8	-40
								1	10
									1