A007207 - OEIS

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

A007207 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`-2`
`4`		`0`
`5`		`-12`
`6`		`2`
`7`		`-78`
`8`		`24`
`9`		`-548`
`10`		`228`
`11`		`-4050`
`12`		`2030`
`13`		`-30960`
`14`		`17670`
`15`		`-242402`
`16`		`152520`
`17`		`-1932000`
`18`		`1312844`
`19`		`-15612150`
`20`		`11297052`
`21`		`-127551884`
`22`		`97291026`
`23`		`-1051478274`
`24`		`838994486`
`25`		`-8732657724`
`26`		`7246304736`
`27`		`-72983051674`
`28`		`62686156026`
`29`		`-613243234224`
`30`		`543146222970`

[1,0,0,-2,0,-12,2,-78,24,-548,228,-4050,2030, -30960,17670,-242402,152520,-1932000,1312844, -15612150,11297052,-127551884,97291026, -1051478274,838994486,-8732657724,7246304736, -72983051674,62686156026,-613243234224, 543146222970]

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 8 14:00 EDT 2024. Contains 375021 sequences. (Running on oeis4.)