A009407 - OEIS

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A009407 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`-1`
`3`		`-1`
`4`		`0`
`5`		`-11`
`6`		`15`
`7`		`27`
`8`		`-504`
`9`		`7785`
`10`		`-74025`
`11`		`835735`
`12`		`-9654216`
`13`		`121643677`
`14`		`-1646734089`
`15`		`23833558707`
`16`		`-368032192080`
`17`		`6033531089873`
`18`		`-104751319907313`
`19`		`1920112851095471`
`20`		`-37066806679606640`
`21`		`751794216181100869`

[0,1,-1,-1,0,-11,15,27,-504,7785,-74025,835735, -9654216,121643677,-1646734089,23833558707, -368032192080,6033531089873,-104751319907313, 1920112851095471,-37066806679606640, 751794216181100869]

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Last modified April 25 06:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)