A071021 - OEIS

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A071021 as a triangular array

										1
									6		6
								30		36		30
							42		180		180		42
						30		252		900		252		30
					66		180		1260		1260		180		66
				2730		396		900		1764		900		396		2730
			6		16380		396		1260		1260		396		16380		6
		510		36		81900		2772		900		2772		81900		36		510
	798		3060		180		114660		396		396		114660

A071021 as a square array

1	6	30	42	30	66	2730	6	510	798
6	36	180	252	180	396	16380	36	3060
30	180	900	1260	900	396	81900	180
42	252	1260	1764	1260	2772	114660
30	180	900	1260	900	396
66	396	396	2772	396
2730	16380	81900	114660
6	36
510

A071021 as an upper right triangle

1	6	30	42	30	66	2730	6	510	798
	6	36	180	252	180	396	16380	36	3060
		30	180	900	1260	900	396	81900	180
			42	252	1260	1764	1260	2772	114660
				30	180	900	1260	900	396
					66	396	396	2772	396
						2730	16380	81900	114660
							6	36
								510