A023820 - OEIS

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

A023820 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`2`
`3`		`4`
`4`		`4`
`5`		`4`
`6`		`7`
`7`		`7`
`8`		`8`
`9`		`8`
`10`		`8`
`11`		`11`
`12`		`12`
`13`		`9`
`14`		`12`
`15`		`13`
`16`		`12`
`17`		`11`
`18`		`13`
`19`		`14`
`20`		`15`
`21`		`14`
`22`		`17`
`23`		`18`
`24`		`19`
`25`		`16`
`26`		`18`
`27`		`20`
`28`		`18`
`29`		`18`
`30`		`21`
`31`		`20`
`32`		`21`
`33`		`19`
`34`		`20`
`35`		`22`
`36`		`22`
`37`		`19`
`38`		`22`
`39`		`24`
`40`		`22`
`41`		`21`
`42`		`24`
`43`		`27`
`44`		`29`
`45`		`28`
`46`		`28`
`47`		`29`
`48`		`31`
`49`		`27`
`50`		`28`
`51`		`29`
`52`		`29`
`53`		`28`
`54`		`34`
`55`		`32`
`56`		`32`
`57`		`31`
`58`		`30`
`59`		`34`
`60`		`34`
`61`		`32`
`62`		`34`
`63`		`36`
`64`		`35`
`65`		`31`
`66`		`32`
`67`		`31`
`68`		`33`
`69`		`33`
`70`		`36`
`71`		`35`
`72`		`36`
`73`		`32`
`74`		`36`
`75`		`40`
`76`		`37`
`77`		`36`
`78`		`38`

[0,2,4,4,4,7,7,8,8,8,11,12,9,12,13,12,11,13,14,15, 14,17,18,19,16,18,20,18,18,21,20,21,19,20,22,22, 19,22,24,22,21,24,27,29,28,28,29,31,27,28,29,29, 28,34,32,32,31,30,34,34,32,34,36,35,31,32,31,33, 33,36,35,36,32,36,40,37,36,38]

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 13 18:22 EDT 2024. Contains 375910 sequences. (Running on oeis4.)