A171174 - OEIS

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A171174 as a simple table

`n`		`a(n)`
`1`		`2`
`2`		`-1`
`3`		`4`
`4`		`-1`
`5`		`2`
`6`		`-3`
`7`		`7`
`8`		`-1`
`9`		`2`
`10`		`-3`
`11`		`4`
`12`		`-5`
`13`		`10`
`14`		`-1`
`15`		`2`
`16`		`-3`
`17`		`4`
`18`		`-5`
`19`		`6`
`20`		`-7`
`21`		`13`
`22`		`-1`
`23`		`2`
`24`		`-3`
`25`		`4`
`26`		`-5`
`27`		`6`
`28`		`-7`
`29`		`8`
`30`		`-9`
`31`		`16`
`32`		`-1`
`33`		`2`
`34`		`-3`
`35`		`4`
`36`		`-5`
`37`		`6`
`38`		`-7`
`39`		`8`
`40`		`-9`
`41`		`10`
`42`		`-11`
`43`		`19`
`44`		`-1`
`45`		`2`
`46`		`-3`
`47`		`4`
`48`		`-5`
`49`		`6`
`50`		`-7`
`51`		`8`
`52`		`-9`
`53`		`10`
`54`		`-11`
`55`		`12`
`56`		`-13`
`57`		`22`
`58`		`-1`
`59`		`2`
`60`		`-3`
`61`		`4`
`62`		`-5`
`63`		`6`
`64`		`-7`
`65`		`8`
`66`		`-9`
`67`		`10`
`68`		`-11`
`69`		`12`
`70`		`-13`
`71`		`14`
`72`		`-15`
`73`		`25`
`74`		`-1`
`75`		`2`
`76`		`-3`
`77`		`4`

[2,-1,4,-1,2,-3,7,-1,2,-3,4,-5,10,-1,2,-3,4,-5,6, -7,13,-1,2,-3,4,-5,6,-7,8,-9,16,-1,2,-3,4,-5,6,-7, 8,-9,10,-11,19,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12, -13,22,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,14, -15,25,-1,2,-3,4]

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Last modified April 18 03:01 EDT 2024. Contains 371767 sequences. (Running on oeis4.)