A051715 - OEIS

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A051715 as a triangular array

1

2 2

3 3 6

4 4 6 1

5 5 20 30 30

6 6 15 20 30 1

7 7 42 35 140 42 42

8 8 28 84 105 28 42 1

9 9 72 84 1 105 140 30 30

10 10 45 120 140 28 105 20 30 1

11 11 110 495 3960 924 231 165 220 66 66

12 12 66 55 495 264 308 132 165 44 66 1

A051715 as a square array

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
`6`	`6`	`20`	`15`	`42`	`28`	`72`	`45`	`110`	`66`
`1`	`30`	`20`	`35`	`84`	`84`	`120`	`495`	`55`
`30`	`30`	`140`	`105`	`1`	`140`	`3960`	`495`
`1`	`42`	`28`	`105`	`28`	`924`	`264`
`42`	`42`	`140`	`105`	`231`	`308`
`1`	`30`	`20`	`165`	`132`
`30`	`30`	`220`	`165`
`1`	`66`	`44`
`66`	`66`
`1`

A051715 as an upper right triangle

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
		`6`	`6`	`20`	`15`	`42`	`28`	`72`	`45`	`110`	`66`
			`1`	`30`	`20`	`35`	`84`	`84`	`120`	`495`	`55`
				`30`	`30`	`140`	`105`	`1`	`140`	`3960`	`495`
					`1`	`42`	`28`	`105`	`28`	`924`	`264`
						`42`	`42`	`140`	`105`	`231`	`308`
							`1`	`30`	`20`	`165`	`132`
								`30`	`30`	`220`	`165`
									`1`	`66`	`44`
										`66`	`66`
											`1`

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Last modified August 10 00:01 EDT 2024. Contains 375044 sequences. (Running on oeis4.)