A361830 - OEIS

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A361830 as a triangular array

										1
									1		2
								1		2		6
							1		2		8		20
						1		2		10		32		70
					1		2		12		46		136		252
				1		2		14		62		226		592		924
			1		2		16		80		342		1136		2624		3432
		1		2		18		100		486		1932		5810		11776		12870
	1		2		20		122		660		3030		11094		30080		53344		48620

A361830 as a square array

1	1	1	1	1	1	1	1	1	1
2	2	2	2	2	2	2	2	2
6	8	10	12	14	16	18	20
20	32	46	62	80	100	122
70	136	226	342	486	660
252	592	1136	1932	3030
924	2624	5810	11094
3432	11776	30080
12870	53344
48620

A361830 as an upper right triangle

1	1	1	1	1	1	1	1	1	1
	2	2	2	2	2	2	2	2	2
		6	8	10	12	14	16	18	20
			20	32	46	62	80	100	122
				70	136	226	342	486	660
					252	592	1136	1932	3030
						924	2624	5810	11094
							3432	11776	30080
								12870	53344
									48620