A009775 - OEIS

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A009775 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`-1`
`3`		`0`
`4`		`6`
`5`		`-30`
`6`		`90`
`7`		`0`
`8`		`-2520`
`9`		`22680`
`10`		`-113400`
`11`		`0`
`12`		`7484400`
`13`		`-97297200`
`14`		`681080400`
`15`		`0`
`16`		`-81729648000`
`17`		`1389404016000`
`18`		`-12504636144000`
`19`		`0`
`20`		`2375880867360000`
`21`		`-49893498214560000`
`22`		`548828480360160000`
`23`		`0`
`24`		`-151476660579404160000`

[0,1,-1,0,6,-30,90,0,-2520,22680,-113400,0, 7484400,-97297200,681080400,0,-81729648000, 1389404016000,-12504636144000,0,2375880867360000, -49893498214560000,548828480360160000,0, -151476660579404160000]

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Last modified June 11 08:09 EDT 2024. Contains 373292 sequences. (Running on oeis4.)