A167666 - OEIS

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A167666 as a triangular array

														1
													1		1
												2		3		1
											0		4		5		1
										0		0		6		7		1
									0		0		0		8		9		1
								0		0		0		0		10		11		1
							0		0		0		0		0		12		13		1
						0		0		0		0		0		0		14		15		1
					0		0		0		0		0		0		0		16		17		1
				0		0		0		0		0		0		0		0		18		19		1
			0		0		0		0		0		0		0		0		0		20		21		1
		0		0		0		0		0		0		0		0		0		0		22		23		1
	0		0		0		0		0		0		0		0

A167666 as a square array

1	1	2	0	0	0	0	0	0	0	0	0	0	0
1	3	4	0	0	0	0	0	0	0	0	0	0
1	5	6	0	0	0	0	0	0	0	0	0
1	7	8	0	0	0	0	0	0	0	0
1	9	10	0	0	0	0	0	0	0
1	11	12	0	0	0	0	0	0
1	13	14	0	0	0	0	0
1	15	16	0	0	0	0
1	17	18	0	0
1	19	20	0
1	21	22
1	23
1

A167666 as an upper right triangle

1	1	2	0	0	0	0	0	0	0	0	0	0	0
	1	3	4	0	0	0	0	0	0	0	0	0	0
		1	5	6	0	0	0	0	0	0	0	0	0
			1	7	8	0	0	0	0	0	0	0	0
				1	9	10	0	0	0	0	0	0	0
					1	11	12	0	0	0	0	0	0
						1	13	14	0	0	0	0	0
							1	15	16	0	0	0	0
								1	17	18	0	0
									1	19	20	0
										1	21	22
											1	23
												1