A143987 - OEIS

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A143987 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`-1`
`2`		`1`
`3`		`1`
`4`		`2`
`5`		`0`
`6`		`-1`
`7`		`3`
`8`		`0`
`9`		`-1`
`10`		`1`
`11`		`-4`
`12`		`0`
`13`		`4`
`14`		`1`
`15`		`-1`
`16`		`5`
`17`		`0`
`18`		`-10`
`19`		`-5`
`20`		`2`
`21`		`1`
`22`		`-6`
`23`		`0`
`24`		`20`
`25`		`15`
`26`		`-12`
`27`		`-9`
`28`		`-1`
`29`		`7`
`30`		`0`
`31`		`-35`
`32`		`-35`
`33`		`42`
`34`		`63`
`35`		`9`
`36`		`1`
`37`		`-8`
`38`		`0`
`39`		`56`
`40`		`70`
`41`		`-112`
`42`		`-252`
`43`		`-72`
`44`		`50`
`45`		`-1`
`46`		`9`
`47`		`0`
`48`		`-84`
`49`		`-126`
`50`		`252`
`51`		`756`
`52`		`324`
`53`		`-450`
`54`		`-267`
`55`		`1`
`56`		`-10`
`57`		`0`
`58`		`120`
`59`		`210`
`60`		`-504`
`61`		`-1890`
`62`		`-1080`
`63`		`2250`
`64`		`2670`
`65`		`413`

[1,-1,1,1,2,0,-1,3,0,-1,1,-4,0,4,1,-1,5,0,-10,-5, 2,1,-6,0,20,15,-12,-9,-1,7,0,-35,-35,42,63,9,1,-8, 0,56,70,-112,-252,-72,50,-1,9,0,-84,-126,252,756, 324,-450,-267,1,-10,0,120,210,-504,-1890,-1080, 2250,2670,413]

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Last modified June 8 17:52 EDT 2024. Contains 373227 sequences. (Running on oeis4.)