A284991 - OEIS

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A284991 as a triangular array

									1
								0		0
							0		0		0
						0		0		0		0
					0		0		0		0		1
				1		0		10		20		45		44
			265		1920		6300		13720		20175		18000		7570
		357435		2398900		7499940		14372820		18433415		15729000		8171730		1975560
	749649145		4695264000		13718863480		24545693760		29544855480		24545693760		13718863480		4695264000		749649145

A284991 as a square array

1	0	0	0	0	1	265	357435	749649145
0	0	0	0	0	1920	2398900	4695264000
0	0	0	10	6300	7499940	13718863480
0	0	20	13720	14372820	24545693760
1	45	20175	18433415	29544855480
44	18000	15729000	24545693760
7570	8171730	13718863480
1975560	4695264000
749649145

A284991 as an upper right triangle

1	0	0	0	0	1	265	357435	749649145
	0	0	0	0	0	1920	2398900	4695264000
		0	0	0	10	6300	7499940	13718863480
			0	0	20	13720	14372820	24545693760
				1	45	20175	18433415	29544855480
					44	18000	15729000	24545693760
						7570	8171730	13718863480
							1975560	4695264000
								749649145