A228621 - OEIS

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A228621 as a simple table

`n`		`a(n)`
`2`		`2`
`3`		`0`
`4`		`12`
`5`		`40`
`6`		`210`
`7`		`840`
`8`		`5208`
`9`		`23760`
`10`		`148410`
`11`		`786720`
`12`		`5137440`
`13`		`30051528`
`14`		`207058488`
`15`		`1318599240`
`16`		`9540828480`
`17`		`65319695136`
`18`		`495194683680`
`19`		`3608366801040`
`20`		`28572937581140`
`21`		`219952629498840`
`22`		`1813839842408748`
`23`		`14663194937503288`
`24`		`125593649761912704`
`25`		`1061139859894326000`

[2,0,12,40,210,840,5208,23760,148410,786720, 5137440,30051528,207058488,1318599240,9540828480, 65319695136,495194683680,3608366801040, 28572937581140,219952629498840,1813839842408748, 14663194937503288,125593649761912704, 1061139859894326000]

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)