A108391 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A108391 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`-1`
`2`		`3`
`3`		`3`
`4`		`1`
`5`		`17`
`6`		`17`
`7`		`-1`
`8`		`67`
`9`		`67`
`10`		`1`
`11`		`289`
`12`		`289`
`13`		`-1`
`14`		`1219`
`15`		`1219`
`16`		`1`
`17`		`5169`
`18`		`5169`
`19`		`-1`
`20`		`21891`
`21`		`21891`
`22`		`1`
`23`		`92737`
`24`		`92737`
`25`		`-1`
`26`		`392835`
`27`		`392835`
`28`		`1`
`29`		`1664081`
`30`		`1664081`
`31`		`-1`
`32`		`7049155`
`33`		`7049155`
`34`		`1`
`35`		`29860705`
`36`		`29860705`
`37`		`-1`
`38`		`126491971`
`39`		`126491971`
`40`		`1`
`41`		`535828593`
`42`		`535828593`
`43`		`-1`
`44`		`2269806339`
`45`		`2269806339`
`46`		`1`
`47`		`9615053953`

[1,-1,3,3,1,17,17,-1,67,67,1,289,289,-1,1219,1219, 1,5169,5169,-1,21891,21891,1,92737,92737,-1, 392835,392835,1,1664081,1664081,-1,7049155, 7049155,1,29860705,29860705,-1,126491971, 126491971,1,535828593,535828593,-1,2269806339, 2269806339,1,9615053953]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)