A140581 - OEIS

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A140581 as a triangular array

														1
													1		1
												2		0		1
											0		1		0		1
										4		0		0		0		1
									-3		2		1		0		0		1
								6		0		0		0		0		0		1
							0		0		0		1		0		0		0		1
						0		0		2		0		0		0		0		0		1
					-5		4		0		0		1		0		0		0		0		1
				10		0		0		0		0		0		0		0		0		0		1
			0		-3		0		20		1		0		0		0		0		0		1		12
		0		0		0		0		0		0		0		0		0		0		0		1		-7
	6		0		0		0		0		1		0		0		0		0		0		0		1

A140581 as a square array

1	1	2	0	4	-3	6	0	0	-5	10	0	0	6
1	0	1	0	2	0	0	0	4	0	-3	0	0
1	0	0	1	0	0	2	0	0	0	0	0
1	0	0	0	1	0	0	0	20	0	0
1	0	0	0	0	1	0	1	0	0
1	0	0	0	0	0	0	0	1
1	0	0	0	0	0	0	0
1	0	0	0	0	0	0
1	0	0	0	0	0
1	0	0	0	0
1	1	0	0
12	1	0
-7	1

A140581 as an upper right triangle

1	1	2	0	4	-3	6	0	0	-5	10	0	0	6
	1	0	1	0	2	0	0	0	4	0	-3	0	0
		1	0	0	1	0	0	2	0	0	0	0	0
			1	0	0	0	1	0	0	0	20	0	0
				1	0	0	0	0	1	0	1	0	0
					1	0	0	0	0	0	0	0	1
						1	0	0	0	0	0	0	0
							1	0	0	0	0	0	0
								1	0	0	0	0	0
									1	0	0	0	0
										1	1	0	0
											12	1	0
												-7	1