A121547 - OEIS

login

The OEIS is supported by the many generous donors to the OEIS Foundation.

A121547 as a triangular array

0

0 1

0 4 4

0 10 20 10

0 20 60 60 20

0 35 140 210 140 35

0 56 280 560 560 280 56

0 84 504 1260 1680 1260 504 84

0 120 840 2520 4200 4200 2520 840 120

0 165 1320 4620 9240 11550 9240 4620 1320 165

0 220 1980 7920 18480 27720 27720 18480 7920 1980 220

A121547 as a square array

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`	`220`
`4`	`20`	`60`	`140`	`280`	`504`	`840`	`1320`	`1980`
`10`	`60`	`210`	`560`	`1260`	`2520`	`4620`	`7920`
`20`	`140`	`560`	`1680`	`4200`	`9240`	`18480`
`35`	`280`	`1260`	`4200`	`11550`	`27720`
`56`	`504`	`2520`	`9240`	`27720`
`84`	`840`	`4620`	`18480`
`120`	`1320`	`7920`
`165`	`1980`
`220`

A121547 as an upper right triangle

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`	`220`
		`4`	`20`	`60`	`140`	`280`	`504`	`840`	`1320`	`1980`
			`10`	`60`	`210`	`560`	`1260`	`2520`	`4620`	`7920`
				`20`	`140`	`560`	`1680`	`4200`	`9240`	`18480`
					`35`	`280`	`1260`	`4200`	`11550`	`27720`
						`56`	`504`	`2520`	`9240`	`27720`
							`84`	`840`	`4620`	`18480`
								`120`	`1320`	`7920`
									`165`	`1980`
										`220`

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 23 13:41 EDT 2024. Contains 371914 sequences. (Running on oeis4.)