A321609 - OEIS

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A321609 as a triangular array

													1
												0		1
											0		1		1
										0		0		1		1
									0		0		3		1		1
								0		0		1		3		1		1
							0		0		1		6		3		1		1
						0		0		0		7		6		3		1		1
					0		0		0		7		16		6		3		1		1
				0		0		0		6		21		16		6		3		1		1
			0		0		0		3		39		34		16		6		3		1		1
		0		0		0		1		44		69		34		16		6		3		1		1
	0		0		0		1		55		130		90		34		16		6		3		1		1

A321609 as a square array

1	0	0	0	0	0	0	0	0	0	0	0	0
1	1	0	0	0	0	0	0	0	0	0	0
1	1	3	1	1	0	0	0	0	0	0
1	1	3	6	7	7	6	3	1	1
1	1	3	6	16	21	39	44	55
1	1	3	6	16	34	69	130
1	1	3	6	16	34	90
1	1	3	6	16	34
1	1	3	6	16
1	1	3	6
1	1	3
1	1
1

A321609 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0	0	0
	1	1	0	0	0	0	0	0	0	0	0	0
		1	1	3	1	1	0	0	0	0	0	0
			1	1	3	6	7	7	6	3	1	1
				1	1	3	6	16	21	39	44	55
					1	1	3	6	16	34	69	130
						1	1	3	6	16	34	90
							1	1	3	6	16	34
								1	1	3	6	16
									1	1	3	6
										1	1	3
											1	1
												1