A342311 - OEIS

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A342311 as a triangular array

									0
								0		2
							4		12		12
						30		60		60		30
					168		280		280		168		56
				840		1260		1260		840		360		90
			3960		5544		5544		3960		1980		660		132
		18018		24024		24024		18018		10010		4004		1092		182
	80080		102960		102960		80080		48048		21840		7280		1680		240

A342311 as a square array

0	0	4	30	168	840	3960	18018	80080
2	12	60	280	1260	5544	24024	102960
12	60	280	1260	5544	24024	102960
30	168	840	3960	18018	80080
56	360	1980	10010	48048
90	660	4004	21840
132	1092	7280
182	1680
240

A342311 as an upper right triangle

0	0	4	30	168	840	3960	18018	80080
	2	12	60	280	1260	5544	24024	102960
		12	60	280	1260	5544	24024	102960
			30	168	840	3960	18018	80080
				56	360	1980	10010	48048
					90	660	4004	21840
						132	1092	7280
							182	1680
								240