A008991 - OEIS

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A008991 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`-1`
`2`		`1`
`3`		`-1`
`4`		`-67`
`5`		`-1`
`6`		`-64397`
`7`		`-113249`
`8`		`-3679787`
`9`		`-810304169`
`10`		`-6040635661561`
`11`		`-428305999661`
`12`		`-16827172241810597`
`13`		`-5620292762592913`
`14`		`-1550760014054450957`
`15`		`-4168373361283100017`
`16`		`-8551022502876237590534947`

[1,-1,1,-1,-67,-1,-64397,-113249,-3679787, -810304169,-6040635661561,-428305999661, -16827172241810597,-5620292762592913, -1550760014054450957,-4168373361283100017, -8551022502876237590534947]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)