A064319 - OEIS

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A064319 as a triangular array

								1
							2		2
						3		6		12
					4		12		72		864
				5		20		240		17280		14929920
			6		30		600		144000		2488320000		37150418534400000
		7		42		1260		756000		108864000000		270888468480000000000		10063619980174622195712000000000000000
	8		56

A064319 as a square array

1	2	3	4	5	6	7	8
2	6	12	20	30	42	56
12	72	240	600	1260
864	17280	144000	756000
14929920	2488320000	108864000000
37150418534400000	270888468480000000000
10063619980174622195712000000000000000

A064319 as an upper right triangle

1	2	3	4	5	6	7	8
	2	6	12	20	30	42	56
		12	72	240	600	1260
			864	17280	144000	756000
				14929920	2488320000	108864000000
					37150418534400000	270888468480000000000
						10063619980174622195712000000000000000