A307025 - OEIS

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A307025 as a triangular array

						0
					0		0
				0		2		56
			0		4		374		14980
		0		8		2664		302844		19005336
	0		12		17556		6530656		1248702804		278982789260
0		18		121838		151793054

A307025 as a square array

0	0	0	0	0	0	0
0	2	4	8	12	18
56	374	2664	17556	121838
14980	302844	6530656	151793054
19005336	1248702804
278982789260

A307025 as an upper right triangle

0	0	0	0	0	0	0
	0	2	4	8	12	18
		56	374	2664	17556	121838
			14980	302844	6530656	151793054
				19005336	1248702804
					278982789260