A270509 - OEIS

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A270509 as a triangular array

									0
								0		3
							0		6		15
						0		21		144		126
					0		36		1137		5406		1149
				0		63		4584		132474		369072		14220
			0		90		15843		1522068		34889103		47829828		230247
		0		129		40392		12034134		1489277664		22383193638		12072484260		5038371
	0		168		95109		65046258

A270509 as a square array

0	0	0	0	0	0	0	0	0
3	6	21	36	63	90	129	168
15	144	1137	4584	15843	40392	95109
126	5406	132474	1522068	12034134	65046258
1149	369072	34889103	1489277664
14220	47829828	22383193638
230247	12072484260
5038371

A270509 as an upper right triangle

0	0	0	0	0	0	0	0	0
	3	6	21	36	63	90	129	168
		15	144	1137	4584	15843	40392	95109
			126	5406	132474	1522068	12034134	65046258
				1149	369072	34889103	1489277664
					14220	47829828	22383193638
						230247	12072484260
							5038371