A009115 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A009115 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`-1`
`2`		`0`
`3`		`4`
`4`		`-12`
`5`		`-12`
`6`		`216`
`7`		`-296`
`8`		`-5296`
`9`		`25200`
`10`		`168128`
`11`		`-1885952`
`12`		`-5391680`
`13`		`163728576`
`14`		`-38412672`
`15`		`-16916558720`
`16`		`61881368832`
`17`		`2050105730816`
`18`		`-16576603568128`
`19`		`-282656394482688`
`20`		`4120672559178752`
`21`		`42100913802486784`

[1,-1,0,4,-12,-12,216,-296,-5296,25200,168128, -1885952,-5391680,163728576,-38412672, -16916558720,61881368832,2050105730816, -16576603568128,-282656394482688,4120672559178752, 42100913802486784]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 4 19:41 EDT 2024. Contains 372257 sequences. (Running on oeis4.)