A326659 - OEIS

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A326659 as a triangular array

									1
								1		1
							1		4		2
						1		15		18		6
					1		64		132		96		24
				1		325		980		1140		600		120
			1		1956		7830		12720		10440		4320		720
		1		13699		68502		143850		162120		103320		35280		5040
	1		109600		657608		1698816		2447760		2123520		1108800		322560		40320

A326659 as a square array

1	1	1	1	1	1	1	1	1
1	4	15	64	325	1956	13699	109600
2	18	132	980	7830	68502	657608
6	96	1140	12720	143850	1698816
24	600	10440	162120	2447760
120	4320	103320	2123520
720	35280	1108800
5040	322560
40320

A326659 as an upper right triangle

1	1	1	1	1	1	1	1	1
	1	4	15	64	325	1956	13699	109600
		2	18	132	980	7830	68502	657608
			6	96	1140	12720	143850	1698816
				24	600	10440	162120	2447760
					120	4320	103320	2123520
						720	35280	1108800
							5040	322560
								40320