A305109 - OEIS

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A305109 as a triangular array

											1
										0		1
									2		2		2
								15		30		18		6
							232		492		400		144		24
						5335		12450		11450		5240		1200		120
					175416		439698		447744		237612		69672		10800		720
				7847665		20851502		22993348		13653304		4724328		956760		105840		5040
			460083056		1283257192		1509767920		979072928		383250880		92961216		13700928		1128960		40320
		34295632587		99690153120		123801126966		86244590412		37181530008		10307520792		1842700968		205630272		13063680		362880
	3171572232860		9554655641770		12424884790780		9188854250660		4284505197600		1318457696960		271837330560		37189193040		3241998720		163296000		3628800

A305109 as a square array

1	0	2	15	232	5335	175416	7847665	460083056	34295632587	3171572232860
1	2	30	492	12450	439698	20851502	1283257192	99690153120	9554655641770
2	18	400	11450	447744	22993348	1509767920	123801126966	12424884790780
6	144	5240	237612	13653304	979072928	86244590412	9188854250660
24	1200	69672	4724328	383250880	37181530008	4284505197600
120	10800	956760	92961216	10307520792	1318457696960
720	105840	13700928	1842700968	271837330560
5040	1128960	205630272	37189193040
40320	13063680	3241998720
362880	163296000
3628800

A305109 as an upper right triangle

1	0	2	15	232	5335	175416	7847665	460083056	34295632587	3171572232860
	1	2	30	492	12450	439698	20851502	1283257192	99690153120	9554655641770
		2	18	400	11450	447744	22993348	1509767920	123801126966	12424884790780
			6	144	5240	237612	13653304	979072928	86244590412	9188854250660
				24	1200	69672	4724328	383250880	37181530008	4284505197600
					120	10800	956760	92961216	10307520792	1318457696960
						720	105840	13700928	1842700968	271837330560
							5040	1128960	205630272	37189193040
								40320	13063680	3241998720
									362880	163296000
										3628800