A215717 - OEIS

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

A215717 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`4`
`5`		`40`
`6`		`190`
`7`		`1330`
`8`		`8680`
`9`		`52920`
`10`		`340200`
`11`		`6237000`
`12`		`76211520`
`13`		`1098857760`
`14`		`11677585920`
`15`		`109679169600`
`16`		`1497396700800`
`17`		`41977644508800`
`18`		`783593969558400`
`19`		`15973899557616000`
`20`		`263524120417958400`
`21`		`3733362595368806400`
`22`		`64262934423790502400`

[1,1,1,1,4,40,190,1330,8680,52920,340200,6237000, 76211520,1098857760,11677585920,109679169600, 1497396700800,41977644508800,783593969558400, 15973899557616000,263524120417958400, 3733362595368806400,64262934423790502400]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 23 11:13 EDT 2024. Contains 371905 sequences. (Running on oeis4.)