A181204 - OEIS

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A181204 as a triangular array

									0
								0		0
							0		4		0
						0		30		30		0
					0		168		756		168		0
				0		840		16632		16632		840		0
			0		3960		360360		1729728		360360		3960		0
		0		18018		7876440		199536480		199536480		7876440		18018		0
	0		80080		174594420		25241364720		140229804000		25241364720

A181204 as a square array

0	0	0	0	0	0	0	0	0
0	4	30	168	840	3960	18018	80080
0	30	756	16632	360360	7876440	174594420
0	168	16632	1729728	199536480	25241364720
0	840	360360	199536480	140229804000
0	3960	7876440	25241364720
0	18018
0

A181204 as an upper right triangle

0	0	0	0	0	0	0	0	0
	0	4	30	168	840	3960	18018	80080
		0	30	756	16632	360360	7876440	174594420
			0	168	16632	1729728	199536480	25241364720
				0	840	360360	199536480	140229804000
					0	3960	7876440	25241364720
						0	18018
							0