A271703 - OEIS

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A271703 as a triangular array

										1
									0		1
								0		2		1
							0		6		6		1
						0		24		36		12		1
					0		120		240		120		20		1
				0		720		1800		1200		300		30		1
			0		5040		15120		12600		4200		630		42		1
		0		40320		141120		141120		58800		11760		1176		56		1
	0		362880		1451520		1693440		846720		211680		28224		2016		72		1

A271703 as a square array

1	0	0	0	0	0	0	0	0	0
1	2	6	24	120	720	5040	40320	362880
1	6	36	240	1800	15120	141120	1451520
1	12	120	1200	12600	141120	1693440
1	20	300	4200	58800	846720
1	30	630	11760	211680
1	42	1176	28224
1	56	2016
1	72
1

A271703 as an upper right triangle

1	0	0	0	0	0	0	0	0	0
	1	2	6	24	120	720	5040	40320	362880
		1	6	36	240	1800	15120	141120	1451520
			1	12	120	1200	12600	141120	1693440
				1	20	300	4200	58800	846720
					1	30	630	11760	211680
						1	42	1176	28224
							1	56	2016
								1	72
									1