A281269 - OEIS

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A281269 as a triangular array

										1
									0		3
								0		3		4
							0		0		30		5
						0		0		15		150		6
					0		0		0		315		525		7
				0		0		0		105		3360		1568		8
			0		0		0		0		3780		24570		4284		9
		0		0		0		0		945		69300		142380		11070		10
	0		0		0		0		0		51975		866250		713790		27555		11
0		0		0		0		0		10395		1455300		8399160		3250500		66792		12

A281269 as a square array

1	0	0	0	0	0	0	0	0	0	0
3	3	0	0	0	0	0	0	0	0
4	30	15	0	0	0	0	0	0
5	150	315	105	0	0	0	0
6	525	3360	3780	945	0	0
7	1568	24570	69300	51975	10395
8	4284	142380	866250	1455300
9	11070	713790	8399160
10	27555	3250500
11	66792
12

A281269 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0
	3	3	0	0	0	0	0	0	0	0
		4	30	15	0	0	0	0	0	0
			5	150	315	105	0	0	0	0
				6	525	3360	3780	945	0	0
					7	1568	24570	69300	51975	10395
						8	4284	142380	866250	1455300
							9	11070	713790	8399160
								10	27555	3250500
									11	66792
										12