A006821 - OEIS

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A006821 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`1`
`4`		`3`
`5`		`60`
`6`		`7848`
`7`		`3459383`
`8`		`2585136675`
`9`		`2807105250897`
`10`		`4221456117363365`
`11`		`8516994770090547979`
`12`		`22470883218081146186209`
`13`		`75883288444204588922998674`
`14`		`322040154704144697047052726990`

[1,0,0,1,3,60,7848,3459383,2585136675, 2807105250897,4221456117363365, 8516994770090547979,22470883218081146186209, 75883288444204588922998674, 322040154704144697047052726990]

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)