A284871 - OEIS

login

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

A284871 as a triangular array

1

2 0

3 1 0

4 3 4 0

5 6 15 7 0

6 10 36 39 18 0

7 15 70 126 132 29 0

8 21 120 310 540 357 70 0

9 28 189 645 1620 2034 1131 126 0

10 36 280 1197 3990 7790 8316 3276 266 0

A284871 as a square array

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
`0`	`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`
`0`	`4`	`15`	`36`	`70`	`120`	`189`	`280`
`0`	`7`	`39`	`126`	`310`	`645`	`1197`
`0`	`18`	`132`	`540`	`1620`	`3990`
`0`	`29`	`357`	`2034`	`7790`
`0`	`70`	`1131`	`8316`
`0`	`126`	`3276`
`0`	`266`
`0`

A284871 as an upper right triangle

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
	`0`	`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`
		`0`	`4`	`15`	`36`	`70`	`120`	`189`	`280`
			`0`	`7`	`39`	`126`	`310`	`645`	`1197`
				`0`	`18`	`132`	`540`	`1620`	`3990`
					`0`	`29`	`357`	`2034`	`7790`
						`0`	`70`	`1131`	`8316`
							`0`	`126`	`3276`
								`0`	`266`
									`0`

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 24 07:17 EDT 2024. Contains 371920 sequences. (Running on oeis4.)