A100641 - OEIS

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A100641 as a triangular array

										1
									2		2
								6		3		6
							8		8		8		8
						90		45		15		45		90
					288		96		144		144		96		288
				840		35		280		105		280		35		840
			17280		17280		640		17280		17280		640		17280		17280
		28350		14175		14175		14175		2835		14175		14175		14175		28350
	89600		89600		2240		5600		44800		44800		5600

A100641 as a square array

1	2	6	8	90	288	840	17280	28350	89600
2	3	8	45	96	35	17280	14175	89600
6	8	15	144	280	640	14175	2240
8	45	144	105	17280	14175	5600
90	96	280	17280	2835	44800
288	35	640	14175	44800
840	17280	14175	5600
17280	14175
28350

A100641 as an upper right triangle

1	2	6	8	90	288	840	17280	28350	89600
	2	3	8	45	96	35	17280	14175	89600
		6	8	15	144	280	640	14175	2240
			8	45	144	105	17280	14175	5600
				90	96	280	17280	2835	44800
					288	35	640	14175	44800
						840	17280	14175	5600
							17280	14175
								28350