A268435 - OEIS

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A268435 as a triangular array

									1
								0		1
							0		2		1
						0		12		6		1
					0		120		84		12		1
				0		1680		1800		300		20		1
			0		30240		52080		10800		780		30		1
		0		665280		1905120		505680		42000		1680		42		1
	0		17297280		84490560		29211840		2857680		126000		3192		56		1

A268435 as a square array

1	0	0	0	0	0	0	0	0
1	2	12	120	1680	30240	665280	17297280
1	6	84	1800	52080	1905120	84490560
1	12	300	10800	505680	29211840
1	20	780	42000	2857680
1	30	1680	126000
1	42	3192
1	56
1

A268435 as an upper right triangle

1	0	0	0	0	0	0	0	0
	1	2	12	120	1680	30240	665280	17297280
		1	6	84	1800	52080	1905120	84490560
			1	12	300	10800	505680	29211840
				1	20	780	42000	2857680
					1	30	1680	126000
						1	42	3192
							1	56
								1