A215680 - OEIS

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A215680 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`3`
`4`		`0`
`5`		`30`
`6`		`90`
`7`		`588`
`8`		`5040`
`9`		`26520`
`10`		`325080`
`11`		`2158728`
`12`		`27731880`
`13`		`249259920`
`14`		`3181258080`
`15`		`36821629848`
`16`		`482278043520`
`17`		`6704476956480`
`18`		`93675256079040`
`19`		`1479108131816448`
`20`		`22566722722104960`
`21`		`390679249452835200`
`22`		`6559255213047250560`
`23`		`122197022127873558528`

[1,0,0,3,0,30,90,588,5040,26520,325080,2158728, 27731880,249259920,3181258080,36821629848, 482278043520,6704476956480,93675256079040, 1479108131816448,22566722722104960, 390679249452835200,6559255213047250560, 122197022127873558528]

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Last modified April 16 10:29 EDT 2024. Contains 371709 sequences. (Running on oeis4.)