A305541 - OEIS

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A305541 as a triangular array

											0
										0		0
									0		0		1
								0		0		3		3
							0		0		12		24		12
						0		1		35		124		150		60
					0		2		111		588		1200		1080		360
				0		6		318		2487		7845		11970		8820		2520
			0		14		934		10240		46280		105840		129360		80640		20160
		0		30		2634		40488		254676		821592		1481760		1512000		816480		181440
	0		62		7503		158220		1344900		5873760		14658840		21772800		19051200		9072000		1814400

A305541 as a square array

0	0	0	0	0	0	0	0	0	0	0
0	0	0	0	1	2	6	14	30	62
1	3	12	35	111	318	934	2634	7503
3	24	124	588	2487	10240	40488	158220
12	150	1200	7845	46280	254676	1344900
60	1080	11970	105840	821592	5873760
360	8820	129360	1481760	14658840
2520	80640	1512000	21772800
20160	816480	19051200
181440	9072000
1814400

A305541 as an upper right triangle

0	0	0	0	0	0	0	0	0	0	0
	0	0	0	0	1	2	6	14	30	62
		1	3	12	35	111	318	934	2634	7503
			3	24	124	588	2487	10240	40488	158220
				12	150	1200	7845	46280	254676	1344900
					60	1080	11970	105840	821592	5873760
						360	8820	129360	1481760	14658840
							2520	80640	1512000	21772800
								20160	816480	19051200
									181440	9072000
										1814400