A284747 - OEIS

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A284747 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`1`
`3`		`4`
`4`		`54`
`5`		`1794`
`6`		`99990`
`7`		`7955460`
`8`		`848584800`
`9`		`116816051520`
`10`		`20167501253760`
`11`		`4268024125243200`
`12`		`1086711068022148800`
`13`		`327759648421871635200`
`14`		`115567595710587359539200`
`15`		`47104362677165542792243200`
`16`		`21978200228619432098036736000`
`17`		`11639211300056830532862403584000`
`18`		`6943663015969522875618267601920000`

[0,1,4,54,1794,99990,7955460,848584800, 116816051520,20167501253760,4268024125243200, 1086711068022148800,327759648421871635200, 115567595710587359539200, 47104362677165542792243200, 21978200228619432098036736000, 11639211300056830532862403584000, 6943663015969522875618267601920000]

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Last modified April 19 02:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)