A123382 - OEIS

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A123382 as a triangular array

										1
									1		4
								1		15		20
							1		35		168		112
						1		66		714		1680		672
					1		110		2178		11352		15840		4224
				1		169		5434		51051		156156		144144		27456
			1		245		11830		178035		972400		1953952		1281280		183040
		1		340		23324		520676		4516798		16102944		22870848		11202048		1244672
	1		456		42636		1337220		17073134

A123382 as a square array

1	1	1	1	1	1	1	1	1	1
4	15	35	66	110	169	245	340	456
20	168	714	2178	5434	11830	23324	42636
112	1680	11352	51051	178035	520676	1337220
672	15840	156156	972400	4516798	17073134
4224	144144	1953952	16102944
27456	1281280	22870848
183040	11202048
1244672

A123382 as an upper right triangle

1	1	1	1	1	1	1	1	1	1
	4	15	35	66	110	169	245	340	456
		20	168	714	2178	5434	11830	23324	42636
			112	1680	11352	51051	178035	520676	1337220
				672	15840	156156	972400	4516798	17073134
					4224	144144	1953952	16102944
						27456	1281280	22870848
							183040	11202048
								1244672