A337409 - OEIS

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A337409 as a triangular array

							0
						0		0
					0		0		0
				0		3		74		0
			0		15		10704		11158298		0
		0		45		345640		4825452718593		314824408633217132928		0
	0		105		5062600		48038354542204960		38491882659952177472606694634030116		136221825854745676076981182469325427379054390050209792		0

A337409 as a square array

0	0	0	0	0	0	0
0	0	3	15	45	105
0	74	10704	345640	5062600
0	11158298	4825452718593	48038354542204960
0	314824408633217132928	38491882659952177472606694634030116
0	136221825854745676076981182469325427379054390050209792
0

A337409 as an upper right triangle

0	0	0	0	0	0	0
	0	0	3	15	45	105
		0	74	10704	345640	5062600
			0	11158298	4825452718593	48038354542204960
				0	314824408633217132928	38491882659952177472606694634030116
					0	136221825854745676076981182469325427379054390050209792
						0