A009711 - OEIS

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A009711 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`-1`
`3`		`2`
`4`		`-6`
`5`		`16`
`6`		`0`
`7`		`-568`
`8`		`7504`
`9`		`-78248`
`10`		`739080`
`11`		`-6314848`
`12`		`44072688`
`13`		`-125928464`
`14`		`-3754236304`
`15`		`114500663552`
`16`		`-2264653307520`
`17`		`37495468333696`
`18`		`-536284797406848`
`19`		`6159440282136320`
`20`		`-34551694794080000`
`21`		`-931439976890484224`

[0,1,-1,2,-6,16,0,-568,7504,-78248,739080, -6314848,44072688,-125928464,-3754236304, 114500663552,-2264653307520,37495468333696, -536284797406848,6159440282136320, -34551694794080000,-931439976890484224]

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Last modified December 6 10:00 EST 2023. Contains 367600 sequences. (Running on oeis4.)