A230730 - OEIS

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A230730 as a triangular array

											0
										0		0
									0		0		0
								0		0		0		0
							0		2		0		0		0
						0		8		30		0		0		0
					0		30		260		396		0		0		0
				0		120		2790		9760		6212		0		0		0
			0		506		32094		287616		389148		95412		0		0		0
		0		2144		376934		9059304		31533840		15237056		1459082		0		0		0
	0		9030		4362078		292876646

A230730 as a square array

0	0	0	0	0	0	0	0	0	0	0
0	0	0	2	8	30	120	506	2144	9030
0	0	0	30	260	2790	32094	376934	4362078
0	0	0	396	9760	287616	9059304	292876646
0	0	0	6212	389148	31533840
0	0	0	95412	15237056
0	0	0	1459082
0	0	0
0	0
0

A230730 as an upper right triangle

0	0	0	0	0	0	0	0	0	0	0
	0	0	0	2	8	30	120	506	2144	9030
		0	0	0	30	260	2790	32094	376934	4362078
			0	0	0	396	9760	287616	9059304	292876646
				0	0	0	6212	389148	31533840
					0	0	0	95412	15237056
						0	0	0	1459082
							0	0	0
								0	0
									0