A047916 - OEIS

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A047916 as a triangular array

											1
										2		2
									6		0		6
								8		8		0		24
							20		0		0		0		120
						12		36		48		0		0		720
					42		0		0		0		0		0		5040
				32		64		0		384		0		0		0		40320
			54		0		324		0		0		0		0		0		362880
		40		200		0		0		3840		0		0		0		0		3628800
	110		0		0		0		0		0		0		0		0		0		39916800
48		144

A047916 as a square array

1	2	6	8	20	12	42	32	54	40	110	48
2	0	8	0	36	0	64	0	200	0	144
6	0	0	48	0	0	324	0	0
24	0	0	0	384	0	0	0
120	0	0	0	0	3840	0
720	0	0	0	0	0
5040	0	0	0	0
40320	0	0	0
362880	0	0
3628800	0
39916800

A047916 as an upper right triangle

1	2	6	8	20	12	42	32	54	40	110	48
	2	0	8	0	36	0	64	0	200	0	144
		6	0	0	48	0	0	324	0	0
			24	0	0	0	384	0	0	0
				120	0	0	0	0	3840	0
					720	0	0	0	0	0
						5040	0	0	0	0
							40320	0	0	0
								362880	0	0
									3628800	0
										39916800