A124644 - OEIS

login

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

A124644 as a triangular array

1

1 1

2 2 1

5 6 3 1

14 20 12 4 1

42 70 50 20 5 1

132 252 210 100 30 6 1

429 924 882 490 175 42 7 1

1430 3432 3696 2352 980 280 56 8 1

4862 12870 15444 11088 5292 1764 420 72 9 1

16796 48620 64350 51480 27720

A124644 as a square array

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`	`16796`
`1`	`2`	`6`	`20`	`70`	`252`	`924`	`3432`	`12870`	`48620`
`1`	`3`	`12`	`50`	`210`	`882`	`3696`	`15444`	`64350`
`1`	`4`	`20`	`100`	`490`	`2352`	`11088`	`51480`
`1`	`5`	`30`	`175`	`980`	`5292`	`27720`
`1`	`6`	`42`	`280`	`1764`
`1`	`7`	`56`	`420`
`1`	`8`	`72`
`1`	`9`
`1`

A124644 as an upper right triangle

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`	`16796`
	`1`	`2`	`6`	`20`	`70`	`252`	`924`	`3432`	`12870`	`48620`
		`1`	`3`	`12`	`50`	`210`	`882`	`3696`	`15444`	`64350`
			`1`	`4`	`20`	`100`	`490`	`2352`	`11088`	`51480`
				`1`	`5`	`30`	`175`	`980`	`5292`	`27720`
					`1`	`6`	`42`	`280`	`1764`
						`1`	`7`	`56`	`420`
							`1`	`8`	`72`
								`1`	`9`
									`1`

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 19:52 EDT 2024. Contains 371963 sequences. (Running on oeis4.)