A128213 - OEIS

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A128213 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`-1`
`4`		`-4`
`5`		`-4`
`6`		`1`
`7`		`7`
`8`		`7`
`9`		`-1`
`10`		`-10`
`11`		`-10`
`12`		`1`
`13`		`13`
`14`		`13`
`15`		`-1`
`16`		`-16`
`17`		`-16`
`18`		`1`
`19`		`19`
`20`		`19`
`21`		`-1`
`22`		`-22`
`23`		`-22`
`24`		`1`
`25`		`25`
`26`		`25`
`27`		`-1`
`28`		`-28`
`29`		`-28`
`30`		`1`
`31`		`31`
`32`		`31`
`33`		`-1`
`34`		`-34`
`35`		`-34`
`36`		`1`
`37`		`37`
`38`		`37`
`39`		`-1`
`40`		`-40`
`41`		`-40`
`42`		`1`
`43`		`43`
`44`		`43`
`45`		`-1`
`46`		`-46`
`47`		`-46`
`48`		`1`
`49`		`49`
`50`		`49`
`51`		`-1`
`52`		`-52`
`53`		`-52`
`54`		`1`
`55`		`55`
`56`		`55`
`57`		`-1`
`58`		`-58`
`59`		`-58`
`60`		`1`
`61`		`61`
`62`		`61`
`63`		`-1`

[1,1,1,-1,-4,-4,1,7,7,-1,-10,-10,1,13,13,-1,-16, -16,1,19,19,-1,-22,-22,1,25,25,-1,-28,-28,1,31,31, -1,-34,-34,1,37,37,-1,-40,-40,1,43,43,-1,-46,-46, 1,49,49,-1,-52,-52,1,55,55,-1,-58,-58,1,61,61,-1]

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Last modified April 25 12:53 EDT 2024. Contains 371969 sequences. (Running on oeis4.)