A222747 - OEIS

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A222747 as a triangular array

									1
								0		0
							0		6		0
						6		32		20		0
					20		657		2438		685		0
				20		7546		126947		125094		5370		0
			70		124363		6363724		27397461		6821264		123410		0
		685		1710608		390671426		5989744766		6178897165		413021606		1341616		0
	2808		26389570		20825891902

A222747 as a square array

1	0	0	6	20	20	70	685	2808
0	6	32	657	7546	124363	1710608	26389570
0	20	2438	126947	6363724	390671426	20825891902
0	685	125094	27397461	5989744766
0	5370	6821264	6178897165
0	123410	413021606
0	1341616
0

A222747 as an upper right triangle

1	0	0	6	20	20	70	685	2808
	0	6	32	657	7546	124363	1710608	26389570
		0	20	2438	126947	6363724	390671426	20825891902
			0	685	125094	27397461	5989744766
				0	5370	6821264	6178897165
					0	123410	413021606
						0	1341616
							0