A331562 - OEIS

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A331562 as a triangular array

											1
										1		1
									1		1		1
								1		1		2		1
							1		1		6		2		1
						1		1		20		12		2		1
					1		1		70		92		26		2		1
				1		1		252		780		506		48		2		1
			1		1		924		7002		11482		2288		86		2		1
		1		1		3432		65226		284002		135040		10010		148		2		1
	1		1		12870		623576		7426610		8956752		1543862		41618		250		2		1

A331562 as a square array

1	1	1	1	1	1	1	1	1	1	1
1	1	1	1	1	1	1	1	1	1
1	2	6	20	70	252	924	3432	12870
1	2	12	92	780	7002	65226	623576
1	2	26	506	11482	284002	7426610
1	2	48	2288	135040	8956752
1	2	86	10010	1543862
1	2	148	41618
1	2	250
1	2
1

A331562 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	1	1	1	1	1	1	1	1	1	1
		1	2	6	20	70	252	924	3432	12870
			1	2	12	92	780	7002	65226	623576
				1	2	26	506	11482	284002	7426610
					1	2	48	2288	135040	8956752
						1	2	86	10010	1543862
							1	2	148	41618
								1	2	250
									1	2
										1