A172970 - OEIS

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A172970 as a simple table

`n`		`a(n)`
`0`		`-1`
`1`		`-1`
`2`		`-1`
`3`		`-1`
`4`		`-1`
`5`		`-1`
`6`		`-1`
`7`		`0`
`8`		`0`
`9`		`-1`
`10`		`-1`
`11`		`1`
`12`		`2`
`13`		`1`
`14`		`-1`
`15`		`-1`
`16`		`7`
`17`		`9`
`18`		`9`
`19`		`7`
`20`		`-1`
`21`		`-1`
`22`		`35`
`23`		`43`
`24`		`44`
`25`		`43`
`26`		`35`
`27`		`-1`
`28`		`-1`
`29`		`143`
`30`		`179`
`31`		`186`
`32`		`186`
`33`		`179`
`34`		`143`
`35`		`-1`
`36`		`-1`
`37`		`575`
`38`		`719`
`39`		`754`
`40`		`760`
`41`		`754`
`42`		`719`
`43`		`575`
`44`		`-1`
`45`		`-1`
`46`		`3071`
`47`		`3647`
`48`		`3790`
`49`		`3824`
`50`		`3824`
`51`		`3790`
`52`		`3647`
`53`		`3071`
`54`		`-1`
`55`		`-1`
`56`		`19199`
`57`		`22271`
`58`		`22846`
`59`		`22988`
`60`		`23016`
`61`		`22988`
`62`		`22846`
`63`		`22271`
`64`		`19199`
`65`		`-1`

[-1,-1,-1,-1,-1,-1,-1,0,0,-1,-1,1,2,1,-1,-1,7,9,9, 7,-1,-1,35,43,44,43,35,-1,-1,143,179,186,186,179, 143,-1,-1,575,719,754,760,754,719,575,-1,-1,3071, 3647,3790,3824,3824,3790,3647,3071,-1,-1,19199, 22271,22846,22988,23016,22988,22846,22271,19199, -1]

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Last modified May 6 05:43 EDT 2024. Contains 372290 sequences. (Running on oeis4.)