A098473 - OEIS

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A098473 as a triangular array

										1
									1		2
								1		4		6
							1		6		18		20
						1		8		36		80		70
					1		10		60		200		350		252
				1		12		90		400		1050		1512		924
			1		14		126		700		2450		5292		6468		3432
		1		16		168		1120		4900		14112		25872		27456		12870
	1		18		216		1680		8820		31752		77616		123552		115830

A098473 as a square array

1	1	1	1	1	1	1	1	1	1
2	4	6	8	10	12	14	16	18
6	18	36	60	90	126	168	216
20	80	200	400	700	1120	1680
70	350	1050	2450	4900	8820
252	1512	5292	14112	31752
924	6468	25872	77616
3432	27456	123552
12870	115830

A098473 as an upper right triangle

1	1	1	1	1	1	1	1	1	1
	2	4	6	8	10	12	14	16	18
		6	18	36	60	90	126	168	216
			20	80	200	400	700	1120	1680
				70	350	1050	2450	4900	8820
					252	1512	5292	14112	31752
						924	6468	25872	77616
							3432	27456	123552
								12870	115830