A143021 - OEIS

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

A143021 as a simple table

`n`		`a(n)`
`2`		`2`
`3`		`6`
`4`		`36`
`5`		`270`
`6`		`2244`
`7`		`19740`
`8`		`179880`
`9`		`1678446`
`10`		`15927780`
`11`		`153055188`
`12`		`1485010488`
`13`		`14518525164`
`14`		`142821228648`
`15`		`1412109087480`
`16`		`14021321053392`
`17`		`139725123309486`
`18`		`1396698760714788`
`19`		`13998927825197220`
`20`		`140638610864578200`

[2,6,36,270,2244,19740,179880,1678446,15927780, 153055188,1485010488,14518525164,142821228648, 1412109087480,14021321053392,139725123309486, 1396698760714788,13998927825197220, 140638610864578200]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 23 07:42 EDT 2024. Contains 371905 sequences. (Running on oeis4.)