A021009 - OEIS

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A021009 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`-1`
`3`		`2`
`4`		`-4`
`5`		`1`
`6`		`6`
`7`		`-18`
`8`		`9`
`9`		`-1`
`10`		`24`
`11`		`-96`
`12`		`72`
`13`		`-16`
`14`		`1`
`15`		`120`
`16`		`-600`
`17`		`600`
`18`		`-200`
`19`		`25`
`20`		`-1`
`21`		`720`
`22`		`-4320`
`23`		`5400`
`24`		`-2400`
`25`		`450`
`26`		`-36`
`27`		`1`
`28`		`5040`
`29`		`-35280`
`30`		`52920`
`31`		`-29400`
`32`		`7350`
`33`		`-882`
`34`		`49`
`35`		`-1`
`36`		`40320`
`37`		`-322560`
`38`		`564480`
`39`		`-376320`
`40`		`117600`
`41`		`-18816`
`42`		`1568`
`43`		`-64`
`44`		`1`
`45`		`362880`
`46`		`-3265920`

[1,1,-1,2,-4,1,6,-18,9,-1,24,-96,72,-16,1,120, -600,600,-200,25,-1,720,-4320,5400,-2400,450,-36, 1,5040,-35280,52920,-29400,7350,-882,49,-1,40320, -322560,564480,-376320,117600,-18816,1568,-64,1, 362880,-3265920]

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)