A258566 - OEIS

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A258566 as a triangular array

1

3 2

15 10 6

105 70 42 30

1155 770 462 330 210

15015 10010 6006 4290 2730 2310

255255 170170 102102 72930 46410 39270 30030

4849845 3233230 1939938 1385670 881790 746130 570570 510510

A258566 as a square array

`1`	`3`	`15`	`105`	`1155`	`15015`	`255255`	`4849845`
`2`	`10`	`70`	`770`	`10010`	`170170`	`3233230`
`6`	`42`	`462`	`6006`	`102102`	`1939938`
`30`	`330`	`4290`	`72930`	`1385670`
`210`	`2730`	`46410`	`881790`
`2310`	`39270`	`746130`
`30030`	`570570`
`510510`

A258566 as an upper right triangle

`1`	`3`	`15`	`105`	`1155`	`15015`	`255255`	`4849845`
	`2`	`10`	`70`	`770`	`10010`	`170170`	`3233230`
		`6`	`42`	`462`	`6006`	`102102`	`1939938`
			`30`	`330`	`4290`	`72930`	`1385670`
				`210`	`2730`	`46410`	`881790`
					`2310`	`39270`	`746130`
						`30030`	`570570`
							`510510`

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)