A173220 - OEIS

login

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

A173220 as a triangular array

0

1 0

2 4 0

60 18 9 0

3528 672 72 16 0

377620 51600 3600 200 25 0

63642600 6883920 359100 13200 450 36 0

15485843814 1399989780 59539410 1675800 38220 882 49 0

5128034120832 401060653056 14585598720

A173220 as a square array

`0`	`1`	`2`	`60`	`3528`	`377620`	`63642600`	`15485843814`	`5128034120832`
`0`	`4`	`18`	`672`	`51600`	`6883920`	`1399989780`	`401060653056`
`0`	`9`	`72`	`3600`	`359100`	`59539410`	`14585598720`
`0`	`16`	`200`	`13200`	`1675800`
`0`	`25`	`450`	`38220`
`0`	`36`	`882`
`0`	`49`
`0`

A173220 as an upper right triangle

`0`	`1`	`2`	`60`	`3528`	`377620`	`63642600`	`15485843814`	`5128034120832`
	`0`	`4`	`18`	`672`	`51600`	`6883920`	`1399989780`	`401060653056`
		`0`	`9`	`72`	`3600`	`359100`	`59539410`	`14585598720`
			`0`	`16`	`200`	`13200`	`1675800`
				`0`	`25`	`450`	`38220`
					`0`	`36`	`882`
						`0`	`49`
							`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 11:01 EDT 2024. Contains 371936 sequences. (Running on oeis4.)