A107230 - OEIS

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A107230 as a triangular array

1

1 1

2 2 1

3 6 3 1

6 12 12 4 1

10 30 30 20 5 1

20 60 90 60 30 6 1

35 140 210 210 105 42 7 1

70 280 560 560 420 168 56 8 1

126 630 1260 1680 1260 756 252 72 9 1

252 1260 3150 4200 4200 2520 1260 360 90 10 1

A107230 as a square array

`1`	`1`	`2`	`3`	`6`	`10`	`20`	`35`	`70`	`126`	`252`
`1`	`2`	`6`	`12`	`30`	`60`	`140`	`280`	`630`	`1260`
`1`	`3`	`12`	`30`	`90`	`210`	`560`	`1260`	`3150`
`1`	`4`	`20`	`60`	`210`	`560`	`1680`	`4200`
`1`	`5`	`30`	`105`	`420`	`1260`	`4200`
`1`	`6`	`42`	`168`	`756`	`2520`
`1`	`7`	`56`	`252`	`1260`
`1`	`8`	`72`	`360`
`1`	`9`	`90`
`1`	`10`
`1`

A107230 as an upper right triangle

`1`	`1`	`2`	`3`	`6`	`10`	`20`	`35`	`70`	`126`	`252`
	`1`	`2`	`6`	`12`	`30`	`60`	`140`	`280`	`630`	`1260`
		`1`	`3`	`12`	`30`	`90`	`210`	`560`	`1260`	`3150`
			`1`	`4`	`20`	`60`	`210`	`560`	`1680`	`4200`
				`1`	`5`	`30`	`105`	`420`	`1260`	`4200`
					`1`	`6`	`42`	`168`	`756`	`2520`
						`1`	`7`	`56`	`252`	`1260`
							`1`	`8`	`72`	`360`
								`1`	`9`	`90`
									`1`	`10`
										`1`

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Last modified April 25 10:34 EDT 2024. Contains 371967 sequences. (Running on oeis4.)