A002891 - OEIS

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A002891 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`1`
`4`		`0`
`5`		`3`
`6`		`-3`
`7`		`15`
`8`		`-30`
`9`		`101`
`10`		`-261`
`11`		`807`
`12`		`-2308`
`13`		`7065`
`14`		`-21171`
`15`		`65337`
`16`		`-200934`
`17`		`627249`
`18`		`-1962034`
`19`		`6192066`
`20`		`-19610346`
`21`		`62482527`
`22`		`-199807110`
`23`		`641837193`
`24`		`-2068695927`
`25`		`6691611633`
`26`		`-21710041944`
`27`		`70645706963`
`28`		`-230488840446`
`29`		`753903842400`
`30`		`-2471624380458`
`31`		`8120879664294`
`32`		`-26736570257010`

[1,0,0,1,0,3,-3,15,-30,101,-261,807,-2308,7065, -21171,65337,-200934,627249,-1962034,6192066, -19610346,62482527,-199807110,641837193, -2068695927,6691611633,-21710041944,70645706963, -230488840446,753903842400,-2471624380458, 8120879664294,-26736570257010]

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Last modified June 5 10:35 EDT 2024. Contains 373105 sequences. (Running on oeis4.)