A143098 - OEIS

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A143098 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`-1`
`4`		`2`
`5`		`2`
`6`		`-1`
`7`		`2`
`8`		`2`
`9`		`-1`
`10`		`2`
`11`		`2`
`12`		`-1`
`13`		`2`
`14`		`2`
`15`		`-1`
`16`		`2`
`17`		`2`
`18`		`-1`
`19`		`2`
`20`		`2`
`21`		`-1`
`22`		`2`
`23`		`2`
`24`		`-1`
`25`		`2`
`26`		`2`
`27`		`-1`
`28`		`2`
`29`		`2`
`30`		`-1`
`31`		`2`
`32`		`2`
`33`		`-1`
`34`		`2`
`35`		`2`
`36`		`-1`
`37`		`2`
`38`		`2`
`39`		`-1`
`40`		`2`
`41`		`2`
`42`		`-1`
`43`		`2`
`44`		`2`
`45`		`-1`
`46`		`2`
`47`		`2`
`48`		`-1`
`49`		`2`
`50`		`2`
`51`		`-1`
`52`		`2`
`53`		`2`
`54`		`-1`
`55`		`2`
`56`		`2`
`57`		`-1`
`58`		`2`
`59`		`2`
`60`		`-1`
`61`		`2`
`62`		`2`
`63`		`-1`
`64`		`2`
`65`		`2`
`66`		`-1`
`67`		`2`
`68`		`2`
`69`		`-1`
`70`		`2`
`71`		`2`
`72`		`-1`

[1,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1, 2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1, 2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1,2,2,-1, 2,2,-1,2,2,-1,2,2,-1]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)