A009790 - OEIS

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A009790 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`-1`
`3`		`-1`
`4`		`12`
`5`		`-44`
`6`		`0`
`7`		`1308`
`8`		`-9744`
`9`		`10252`
`10`		`627300`
`11`		`-8602012`
`12`		`52192272`
`13`		`175312944`
`14`		`-7344669696`
`15`		`47605119248`
`16`		`1147983841920`
`17`		`-39804749006384`
`18`		`654853807745712`
`19`		`-6275619074963280`
`20`		`23531625959609280`
`21`		`-369751741237644224`

[0,1,-1,-1,12,-44,0,1308,-9744,10252,627300, -8602012,52192272,175312944,-7344669696, 47605119248,1147983841920,-39804749006384, 654853807745712,-6275619074963280, 23531625959609280,-369751741237644224]

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Last modified April 26 07:58 EDT 2024. Contains 371991 sequences. (Running on oeis4.)