A012254 - OEIS

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A012254 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`5`
`5`		`24`
`6`		`109`
`7`		`720`
`8`		`4521`
`9`		`40320`
`10`		`330681`
`11`		`3628800`
`12`		`36468717`
`13`		`479001600`
`14`		`5721101541`
`15`		`87178291200`
`16`		`1205289090513`
`17`		`20922789888000`
`18`		`328897528901361`
`19`		`6402373705728000`
`20`		`112769846051251797`
`21`		`2432902008176640000`

[1,1,1,2,5,24,109,720,4521,40320,330681,3628800, 36468717,479001600,5721101541,87178291200, 1205289090513,20922789888000,328897528901361, 6402373705728000,112769846051251797, 2432902008176640000]

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)